CN111769337B - Columnar battery and controller with indicator light - Google Patents

Abstract

The present disclosure discloses a cylindrical battery and a controller with an indicator light. The controller comprises a controller shell, a circuit board, an electrode cap, an indicator light and a light guide assembly. The controller housing has a cavity therein, and an opening penetrating the cavity is provided on a surface thereof. The circuit board is positioned in the cavity and comprises a first surface and a second surface which are opposite to each other, and the second surface is welded with components. The electrode cap comprises a cylindrical cap body with one end being open and the other end being closed and provided with a cavity, and a cap peak surrounding the open end of the cap body, the open end face of the positive electrode cap faces the first surface of the circuit board, the cap peak is attached to the circuit board, and the cap body is exposed out of the controller shell through the opening. The pilot lamp is used for instructing operating condition, locates on the first surface of circuit board and be arranged in the cavity of the cap body, and the electrode cap edge cap body a week is provided with a plurality of interval distribution's light trap. The light guide component is of a sheet annular structure, is provided with a through hole and is sleeved on the cap body through the through hole, and covers the cap peak and seals the light hole.

Description

Columnar battery and controller with indicator light

Technical Field

The disclosure relates to the field of secondary batteries, in particular to a columnar battery and a controller with an indicator lamp.

Background

Cylindrical batteries, such as No. 5 batteries, no. 7 batteries, etc., are widely used in toys, flashlights, alarm clocks, etc., in daily life. Most of the batteries are currently designed as rechargeable and recyclable batteries due to energy saving and environmental protection requirements. For rechargeable batteries, a corresponding charging seat is usually provided for charging, and generally, a corresponding indicator light is arranged on the charging seat to indicate the working state, because the volume of the battery is smaller, if the indicator light is placed inside the battery, a large space is necessarily occupied, so that most rechargeable batteries are not provided with corresponding indicator light signals. However, when a plurality of batteries are simultaneously placed on one charging stand, it cannot be determined whether each battery is in good contact or can be charged in a matching manner with the charging stand.

Disclosure of Invention

In order to solve the problem that the battery cannot know the working state of the battery due to the fact that the corresponding indicator lamp cannot be arranged in the small size of the battery in the related art, the present disclosure provides a columnar battery capable of indicating the working state of the battery without increasing the size of the battery and a controller with the indicator lamp.

The present disclosure provides a controller with an indicator light, comprising:

A controller housing having a cavity therein, the surface of the controller housing having an opening therethrough;

the circuit board is positioned in the cavity and comprises a first surface and a second surface which are opposite to each other, and the second surface is welded with components;

An electrode cap comprising: the battery pack comprises a cylindrical cap body with one end being open and the other end being closed and provided with a cavity, and a cap peak surrounding the open end of the cap body, wherein the open end face of the electrode cap faces to the first surface of the circuit board, the cap peak is attached to the circuit board, and the cap body is exposed out of the controller shell through the opening;

The indicating lamp is used for indicating the working state, is arranged on the first surface of the circuit board and is positioned in the cavity of the cap body, and a plurality of light holes which are distributed at intervals are formed in the periphery of the electrode cap edge of the cap body; and

The light guide component is of a sheet annular structure, is provided with a through hole and is sleeved on the cap body through the through hole, and covers the cap peak and closes the light hole.

Optionally, the cap peak continuously surrounds the cap body for one circle.

Optionally, the light guide assembly includes the light guide piece, the light guide piece is insulating light guide material, the light guide piece includes first surface and the second surface that is parallel to each other and relative setting, the through-hole link up first surface with the second surface, the pore wall of through-hole encircles and contacts the periphery of the cap body, the second surface laminating of light guide piece the brim of a hat makes the light that the pilot lamp sent is through the light trap is followed the radial propagation of light guide piece the radial periphery of light guide piece forms annular light emitting surface.

Optionally, the hole wall of the through hole of the light guide plate seals the light hole.

Optionally, the light guide assembly further includes a light shielding layer, and the light shielding layer covers or is coated on the light guide sheet.

Optionally, the light hole is arranged at the junction of the cap body and the cap peak, and extends from the cap body to the cap peak, and the hole wall of the through hole and the shading layer together seal the light hole.

Optionally, the sum of the wall height of the through hole and the thickness of the light shielding layer is greater than the height of the light transmitting hole.

Optionally, the controller casing includes the shell body, the shell body include cylindric lateral wall and form in the limit baffle of lateral wall axial one end, the opening is seted up at the center of limit baffle, the outer fringe department of the first surface of circuit board be provided with the pad and laminate the welding in through this pad limit baffle's inner face, the second surface of light guide piece covers simultaneously the brim of a hat of electrode cap with limit baffle's surface, the light guide piece by the outer wall of the cap body extend all the way to with the lateral wall parallel and level of shell body.

Optionally, the controller housing further includes an inner housing disposed in the cavity, and the outer housing, the inner housing, and the circuit board are connected by welding.

Optionally, the bottom of the outer shell exceeds the bottom of the inner shell, the exceeding part forms an annular positioning cylindrical surface structure, or the bottom of the outer shell is retracted in the bottom of the inner shell, and the part of the inner shell exceeding the outer shell forms an annular positioning groove.

Optionally, the electrode cap is a positive electrode cap or a negative electrode cap.

Optionally, an inner electrode is further disposed on the second surface of the circuit board, and the inner electrode is electrically connected with the electrode cap through a component of the circuit board.

The present disclosure provides a cylindrical battery, comprising:

a columnar cell having a positive electrode and a negative electrode; and

Above-mentioned controller with pilot lamp, the controller is installed the positive electrode one end of column electric core, the shell body of controller with the negative electrode electric core electric connection of column electric core, the inner electrode of controller with the positive electrode electric connection of column electric core.

Optionally, the columnar battery cell is a soft package battery cell, a negative electrode plate arranged at one end of the columnar battery cell is a negative electrode plate, the negative electrode plate extends towards the other end of the columnar battery cell, the columnar battery cell is sleeved into a battery outer shell, the negative electrode plate is connected with the battery outer shell in a welding way, and the outer shell of the controller is connected with the battery outer shell;

The positive electrode plate arranged at the other end of the columnar battery cell is a positive electrode plate, and the positive electrode plate is connected with the inner electrode of the controller.

Optionally, the outer shell of the columnar battery cell is a steel shell, the steel shell of the columnar battery cell is a negative electrode, and the outer shell of the battery controller is connected with the steel shell;

the columnar battery cell is provided with a positive electrode boss, the positive electrode is the positive electrode of the columnar battery cell, and the positive electrode boss is connected with the internal electrode of the controller.

The present disclosure provides a cylindrical battery, comprising:

a columnar cell having a positive electrode and a negative electrode; and

Above-mentioned controller with pilot lamp, the controller is installed the negative electrode one end of column electric core, the shell body of controller with the positive electrode electric core electric connection of column electric core, the internal electrode of controller with the negative electrode electric connection of column electric core.

Optionally, the columnar battery cell is a soft package battery cell, the positive electrode plate arranged at one end of the columnar battery cell is a positive electrode plate, the positive electrode plate extends towards the other end of the columnar battery cell, the columnar battery cell is sleeved into a battery outer shell, the positive electrode plate is connected with the battery outer shell in a welding way, and the outer shell of the controller is connected with the battery outer shell;

The negative electrode arranged at the other end of the columnar battery cell is a negative electrode sheet, and the negative electrode sheet is connected with the inner electrode of the controller.

Optionally, the outer shell of the columnar battery cell is an aluminum shell, the aluminum shell of the columnar battery cell is a positive electrode of the columnar battery cell, and the outer shell of the controller is connected with the aluminum shell;

The columnar battery cell is provided with a negative electrode boss, the negative electrode boss is a negative electrode of the columnar battery cell, and the negative electrode boss is connected with an inner electrode of the battery controller.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

The present disclosure provides a controller with an indicator light including a controller housing, a circuit board, an electrode cap, an indicator light, and a light guide assembly. The controller housing has a cavity therein, and an opening penetrating the cavity is provided on a surface thereof. The circuit board is positioned in the cavity and comprises a first surface and a second surface which are opposite. The electrode cap comprises a cylindrical cap body with one end being open and the other end being closed and provided with a cavity, and a cap peak surrounding the open end of the cap body, the open end face of the positive electrode cap faces the first surface of the circuit board, the cap peak is attached to the circuit board, and the cap body is exposed out of the controller shell through the opening. The pilot lamp is used for instructing operating condition, locates on the first surface of circuit board and be arranged in the cavity of the cap body, and the electrode cap edge cap body a week is provided with a plurality of interval distribution's light trap. The light guide component is of a sheet annular structure, is provided with a through hole and is sleeved on the cap body through the through hole, and covers the cap peak and seals the light hole. The pilot lamp sets up in the cavity of electrode cap body, has saved the installation space of pilot lamp, and the light that sends of pilot lamp is conducted to the outside of controller through light guide assembly simultaneously, from this, when the battery of installing this controller charges, light sends from the side, does not send from the tip of controller, when avoiding the tip to insert the charging seat, light is covered by the charging seat, can't be observed.

The present disclosure provides a columnar battery including a columnar cell and the controller with an indicator light described above. The columnar cell has a positive electrode and a negative electrode. The controller is installed in the one end of column electric core, and the shell body of controller is connected with the positive electrode electricity of column electric core, and the inner electrode of controller is connected with the negative electrode electricity of column electric core. The inside of this column battery sets up the pilot lamp, makes battery itself can instruct operating condition, and light sends from the side simultaneously, does not send from the tip of controller, when avoiding the tip to insert the charging seat, light is covered by the charging seat, can't be observed. And through reasonable layout of the indicator lamps, the installation space is saved.

The present disclosure provides a columnar battery including a columnar cell and the controller with an indicator light described above. The columnar cell has a positive electrode and a negative electrode. The controller is installed in the one end of column electric core, and the shell body of controller is connected with the negative electrode electricity of column electric core, and the internal electrode of controller is connected with the positive electrode electricity of column electric core. The inside of this column battery sets up the pilot lamp, makes battery itself can instruct operating condition, and light sends from the side simultaneously, does not send from the tip of controller, when avoiding the tip to insert the charging seat, light is covered by the charging seat, can't be observed. And through reasonable layout of the indicator lamps, the installation space is saved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is an exploded view of a controller with an indicator lamp applied to a battery No. 5.

Fig. 2 is a schematic cross-sectional view of an assembled controller with an indicator light for use with battery No. 5.

Fig. 3 is an exploded view of the electrode cap and circuit board of fig. 1.

Fig. 4 is an exploded view of the internal electrode and the circuit board of the controller with an indicator lamp applied to the battery No. 5.

Fig. 5 is a schematic structural view of a controller with an indicator light applied to a number 5 battery, wherein a heat conducting glue layer is poured into an outer shell of the controller.

Fig. 6 is an exploded view of a controller with an indicator light applied to a battery No. 5 including a negative electrode cap.

Fig. 7 is a schematic cross-sectional view of fig. 6.

Fig. 8 is an exploded view of a negative electrode cap and circuit board of the controller of fig. 6.

Fig. 9 is a schematic cross-sectional view of the negative electrode cap and circuit board of fig. 8 assembled.

Fig. 10 is an exploded view of a controller with an indicator lamp applied to battery No. 7.

Fig. 11 is a schematic cross-sectional view of an assembled controller with an indicator light for use with battery No. 7.

Fig. 12 is an exploded view of the electrode cap and the circuit board of fig. 10.

Fig. 13 is an exploded view of the internal electrode and the circuit board of the controller with an indicator lamp applied to the battery No. 7.

Fig. 14 is an exploded schematic view of a cylindrical battery of the present disclosure.

Fig. 15 is an exploded schematic view of a cylindrical battery of the present disclosure with a controller with an indicator light disposed at the negative terminal.

Fig. 16 is an exploded schematic view of the pouch pillar battery of the present disclosure.

Detailed Description

For the purpose of further illustrating the principles and structure of the present invention, preferred embodiments of the invention will now be described in detail with reference to the accompanying drawings.

The present disclosure relates to a controller with an indicator lamp, which is applied to a secondary battery for realizing control of functions such as charging and/or discharging the secondary battery.

The controller with the indicator lamp comprises a controller shell, a circuit board, an electrode cap, the indicator lamp and a light guide assembly. The controller shell is internally provided with a cavity, the surface of the controller shell is provided with an opening penetrating through the cavity, namely, both end surfaces of the cavity are provided with openings. The circuit board is positioned in the cavity and comprises a first surface and a second surface which are opposite. The electrode cap comprises a cylindrical cap body with one end being open and the other end being closed and provided with a cavity, and a cap peak surrounding the open end of the cap body, wherein the open end face of the electrode cap faces the first surface of the circuit board, the cap peak is attached to the circuit board, and the cap body is exposed out of the controller shell through the opening. The pilot lamp is used for instructing operating condition, locates on the first surface of circuit board and be arranged in the cavity of the cap body, and the electrode cap edge cap body a week is provided with a plurality of interval distribution's light trap. The light guide component is of a sheet annular structure, is provided with a through hole and is sleeved on the cap body through the through hole, and covers the cap peak and seals the light hole. The pilot lamp sets up in the cavity of the cap body of electrode cap, has saved the installation space of pilot lamp, and the light that sends of pilot lamp is conducted to the outside of controller through light guide assembly simultaneously, from this, when the battery of installing this controller charges, light sends from the side, does not send from the tip of controller, when avoiding the tip to insert the charging seat, light is covered by the charging seat, can't be observed.

The controller can be applied to a No. 5 battery, a No. 7 battery and other types of batteries. The technical solution of the present disclosure is described below with reference to a controller applied to the battery No. 5 and the battery No. 7.

The present disclosure provides a controller with an indicator light, the controller including a controller housing, a circuit board, an electrode cap, an indicator light, and a light guide assembly, the controller housing may be a double housing or a single housing. The following describes the technical scheme of the present disclosure by taking a double housing as an example. As shown in fig. 1 to 3, fig. 1 is an exploded view of a controller with an indicator lamp applied to a battery No. 5, fig. 2 is a schematic sectional view of the assembled controller with an indicator lamp applied to a battery No. 5, and fig. 3 is an exploded view of an electrode cap and a circuit board in fig. 1, the controller with an indicator lamp 10 including a controller housing, a circuit board 13, an electrode cap 15, an indicator lamp 12, and a light guide assembly 14. Wherein the controller housing comprises an outer housing 11 and an inner housing 18.

The outer case 11 is cylindrical and made of a metal material. The outer case 11 includes a cylindrical outer side wall 111 and a limit stopper 112 forming an axial end of the outer side wall 111 and perpendicular to the outer side wall 111. The limit stop 112 is disposed around the inner circumference of the outer sidewall 111. The inner diameter of the limit baffle 112 is smaller than the outer diameter of the circuit board 13, so that the circuit board 13 can be limited in the outer shell 11 to prevent exposure. An opening is provided at the other end of the outer housing 11 facing the limit baffle 112 in the axial direction. The inside of the outer shell 11 forms a cavity, the limit baffle 112 is provided with a through hole, and the cavity is communicated with the opening at the other end of the outer shell 11 and the through hole of the limit baffle 112.

The other end of the outer housing 11 opposite to the limit baffle 112 is provided with a plurality of pressure relief holes 113, more specifically, the plurality of pressure relief holes 113 are opened at the edge of the bottom of the outer side wall 111 of the outer housing 11, and the plurality of pressure relief holes 113 are distributed at intervals along the bottom periphery of the outer side wall 111. The pressure relief holes 113 are used for discharging gas generated by the battery cells of the No. 5 battery so as to reduce the internal pressure of the battery.

Optionally, the pressure relief holes 113 are equally spaced along the periphery of the outer housing 11.

Alternatively, the pressure relief holes 113 may be disposed at unequal intervals along the periphery of the outer housing 11.

Alternatively, the pressure relief aperture 113 may be a rectangular slot or an arcuate slot.

The two pressure release holes 113 are formed with protrusions 115 spot-welded to the case of the battery cell, and the outer edges of the protrusions 115 are in contact with the case of the battery cell or with the battery case.

Alternatively, the pressure relief holes may be round holes formed in the outer side wall 111 of the outer casing 11, that is, the round holes are not formed on the bottom edge of the outer side wall 11 but are formed above the bottom edge, and the round holes are distributed at intervals along the circumferential direction enclosed by the outer side wall 111.

The circuit board 13 may have a disk shape with a first surface 131 and a second surface 132 opposite to each other. The first surface 131 is provided with an electrode cap 15. A circuit component, which may be a component that includes control of charging and/or discharging, is disposed on the second surface 132.

A ring of housing pads 1311 is also provided at the edge of the first surface 131, the housing pads 1311 being in welded connection with the inner face of the limit stop 112. The welding mode can be a process method of tin melting welding, tin melting welding by an electric soldering iron, hot air tin melting welding after spraying tin paste, laser tin melting welding after spraying tin paste and the like.

The first surface 131 of the circuit board 13 is further provided with a plurality of electrode cap pads 1312, and the electrode cap pads 1312 may be coated with solder such as solder paste for soldering the electrode caps 15.

A channel 1313 is formed between the electrode cap pad 1312 and the electrode cap pad 1312, the channel 1313 separating adjacent two electrode cap pads 1312. The effect of this channel 1313 is, on the one hand, to isolate the solder applied to the electrode cap pad 1312 from focusing adjacent solder together, thereby avoiding stress concentrations, dispersing stresses, and preventing electrode cap 15 from drifting during the soldering process; on the other hand, a flow-through outlet is provided for the gas generated by the flux during heating, allowing the gas to exit through the channel 1313.

The electrode cap pads 1312 may have a fan shape. The electrode cap pads 1312 and the channels 1313 together form an annular region, each of the electrode cap pads 1312 being scattered about the center of the annular region. The electrode cap 15 covers the annular region. The center of the circuit board 13 coincides with the center of the annular region, so that the electrode cap 15 and the circuit board 13 are concentrically and coaxially disposed. The concentric coaxiality means that the central axis of the electrode cap 15 in the axial direction coincides with the central axis of the circuit board 13 in the axial direction.

The electrode cap pad 1312 is designed as a partitioned structure and has isolated channels 1313, so that when the electrode cap 15 is placed on the electrode cap pad 1312 in a patch-like manner and passed through a reflow machine, the gas volatilized by the flux in the solder paste can diffuse out through the channels 1313. If the electrode cap pads 1312 are provided with a circular structure without partition and without isolation channels, the electrode cap 15 is easily pushed open when the soldering flux of the solder paste on the electrode cap pads 1312 volatilizes, which causes the electrode cap 15 to skew. Meanwhile, compared with the whole pad without the partition, in the welding process of the circuit board 13 through the reflow soldering machine, the partition structure of the pad can control the stress of the surface of the molten solder paste on each electrode cap pad within a certain range, and can effectively inhibit the drifting condition caused when the circuit board 13 and the electrode cap 15 pass through the reflow soldering machine. If the paste is not uniformly applied, excess paste on the electrode cap pads 1312 may drain toward the channels 1313, ensuring that the electrode cap 15 does not drift during the bonding process.

The electrode cap 15 includes a cylindrical cap body 151 having one end opened and the other end closed and having a cavity, and a cap peak 152 surrounding the open end of the cap body 151. The cap 151 is exposed to the outer case 11 through an opening of the outer case 11. The open end face of the electrode cap 15 faces the first surface 131 of the circuit board 13 and the cap peak 152 is attached to the circuit board 13. The electrode cap pad 1312 and the channel 1313 form an annular region having an inner diameter smaller than that of the cap peak 152, and when the solder paste is melted, the solder paste extends upward along the cap peak 152 on the inner wall of the cap body 151, enhancing the welding strength of the cap peak 152 and the electrode cap pad 1312.

An indicator lamp 12 is disposed at a middle position of an annular region formed by the electrode cap pad 1312 and the channel 1313, and the indicator lamp 12 is located in a cavity of the cap 151.

The electrode cap 15 is provided with a plurality of light holes 153 distributed at intervals along a circumference of the cap body 151.

The light holes 153 are disposed at the junction between the cap 151 and the cap peak 152, and extend from the cap 151 to the cap peak 152. More specifically, the light holes 153 extend from the bottom side wall of the cap body 151 near the cap peak 152 to the cap peak 152, but the light holes 153 do not penetrate the cap peak 151, so that the cap peak 152 forms a continuous cap peak around the cap body 151 at the periphery of the light holes 153. In this way, the cap peak 151 is reserved with enough welding area to be welded with the electrode cap pad 1312, so that the welding strength of the cap peak 151 and the electrode cap pad 1312 is ensured, and the structural strength of the electrode cap 15 is also ensured.

The light holes 153 penetrate from the bottom surface of the cap peak 151 to the top surface of the cap peak. The light emitted from the indicator light 12 can be emitted from the bottom surface of the visor 151 toward the top surface.

The width dimensions of the light holes 153 may be determined according to the diameter of the cap 151.

The light holes 153 are disposed at equal intervals along the outer circumference of the cap 151.

Optionally, the light holes 153 are disposed at unequal intervals along the periphery of the cap 151.

The light guide assembly 14 has a sheet-shaped ring structure, which is provided with a through hole and is sleeved on the cap 151 through the through hole, and the light guide assembly 14 covers the cap peak 152 and seals the light hole 153.

The light guide assembly 14 includes a light guide sheet 141, and the light guide sheet 141 is made of an insulating light guide material. The light guide 141 includes a first surface 1411 and a second surface 1412 disposed parallel to each other and opposite to each other. The through hole penetrates through the first surface 1411 and the second surface 1412, the hole wall of the through hole surrounds and contacts the periphery of the cap 151, the second surface 1412 of the light guide plate 141 is attached to the cap peak 152, so that the light emitted by the indicator lamp 12 propagates along the radial direction of the light guide plate 141 after passing through the light hole 153, and an annular light emitting surface is formed on the radial periphery of the light guide plate 141.

The second surface 1412 of the light guide 141 covers both the visor 152 of the electrode cap 15 and the outer surface of the limit shield 112. The light guide plate 141 extends from the outer wall of the cap 151 until it is flush with the outer side wall of the outer case 11, and the annular light emitting surface is flush with the outer side wall of the outer case 11.

Further, the light guide assembly 14 further includes a light shielding layer 142, and the light shielding layer 142 covers or is coated on the light guide 141. The light shielding layer 142 shields the light emitted upward from the light guide sheet 141 and guides the light to be emitted in the radial direction.

The light shielding layer 142 and the light guide sheet 141 close the light holes 153 to prevent external dust or other substances from entering the cap 11. More specifically, as shown in fig. 2, the hole wall of the light guide 141 and the light shielding layer 142 together close the light transmission hole 153. That is, the sum h1 of the wall height of the through hole of the light guide 141 and the thickness of the light shielding layer 14 is greater than the height h2 of the light transmitting hole 153. The height of the light hole 153 is the height extending from the top surface of the cap peak 152 to the sidewall of the cap 151.

Alternatively, the light guide assembly 14 may omit the shielding layer, in which case the light holes are sealed by the light guide 141, that is, the thickness of the light guide 141 is greater than the height of the light holes 153, and the walls of the through holes of the light guide 141 seal the light holes 153.

Further, the controller 10 also includes an inner housing 18 disposed within the cavity of the outer housing 11. The inner case 18, the circuit board 13 and the outer case 11 are welded to each other. The welding modes of the three can be as follows: the inner case 18 and the circuit board 13 are first connected by solder reflow, and the inner case 18 and the outer case 11 are then connected by laser solder.

The inner housing 18 is made of metal material and is accommodated in the cavity of the outer housing 11. The inner housing 18 includes an annular inner side wall 182 and a support edge portion 181 connected to the inner side wall 182 for supporting the circuit board 13. The inner side wall 182 encloses a cylinder. The support edge portion 181 extends to be bent toward the central axis direction of the inner side wall 182 to form a support surface for supporting the circuit board 13.

The supporting edge portion 181 includes a plurality of limiting pins 1811 formed at the top end of the inner sidewall 182 and circumferentially spaced along the inner sidewall 182, each limiting pin 1811 is bent and extended toward the central axis direction of the inner sidewall 182 to form a supporting surface for supporting the circuit board 13, and each limiting pin 1811 and the inner sidewall 182 form an arc chamfer therebetween, i.e. form an arc transition portion 183.

An edge position of the second surface 132 of the circuit board 13 is provided with an inner case pad 1321, and the inner case pad 1321 is solder-connected with the support edge portion 181 of the inner case 18. A first gap 116 for depositing solder paste is formed between the transition portion 183 and each of the outer wall 111 and the inner case pad 1321 of the circuit board 13. A second gap 117 for depositing solder paste is formed between the circuit board 13 and the outer side wall 111 of the outer case 11, and the first gap 116 and the second gap 117 are communicated. When soldering the circuit board 13, the inner case 18, and the outer case 11, for example, by reflow soldering, solder paste applied to the outer case pads 1311 and the inner case pads 1321 of the circuit board 13 flows into the first gap 116 and the second gap 117 when heated, and fills the first gap 116 and the second gap 117.

In addition, in order to facilitate the installation between the inner case 18 and the outer case 11, a gap is reserved between the outer surface of the inner side wall of the inner case 18 and the inner surface of the outer side wall of the outer case 11, and a part of solder paste on the outer case pads 1311 and the inner case pads 1321 also flows into the gap to fill the gap.

After the solder paste is heated and cured, the outer shell pads 1311 are bonded to the limit stops 112 of the outer shell 11, and the inner shell pads 1321 are bonded to the support surfaces of the support edge portions 181 of the inner shell 18. The solder paste is cured and then supports the circuit board together with the supporting edge portion 181, and the supporting edge portion 181 and the solder paste can provide firm support for the circuit board 13 after being bonded due to the good shearing resistance of the solder paste.

A groove for depositing solder paste is formed between the two limit legs 1811 of the supporting edge portion 181, and solder paste on the outer shell pads 1311 and the inner shell pads 1321 is extruded into the groove when the solder paste is heated and solidified. In this way, the connection between the outer case 11, the circuit board 13, and the inner case 18 is further reinforced.

In this disclosure, instead of the solder paste, a tin wire or a tin ball may be used, and the gap or the groove may be filled with the fluid-like solder after the tin wire or the tin ball is melted.

Optionally, each of the limiting prongs 1811 of the inner housing 18 are equally spaced along the circular periphery enclosed by the inner sidewall 182.

Alternatively, the spacing prongs 1811 of the inner housing 18 may be non-equally spaced.

The bottom of the outer housing 11 extends beyond the bottom of the inner housing 18 to form a locating cylinder structure 114 for locating the columnar cells. The bottom edge of the inner housing 18 is higher than the bottom surface of the pressure relief hole 113 so that the inner housing 18 does not block the pressure relief hole 113.

Referring to fig. 4, an exploded view of the internal electrode and the circuit board of the controller with the indicator light applied to the battery No. 5 is shown. The second surface 132 of the circuit board 13 is further provided with an inner electrode pad 1322 for welding the inner electrode 16, the inner electrode pad 1322 is further provided with an inner electrode positioning hole 134, and the positioning pin 163 of the inner electrode 16 is inserted into the inner electrode positioning hole 134, so that the circumferential positioning of the inner electrode 16 on the circuit board 13 is ensured. The inner electrode 16 includes an electrode strip 161 and an inner electrode circuit board land 164, and the inner electrode circuit board land 164 forms an L-shape with the electrode strip 161. The inner electrode circuit board soldering station 164 has a triangular shape with a through hole formed therein. The inner electrode circuit board bonding pad 164 abuts the inner electrode pad 1322 of the second surface 132 of the circuit board 13, ensuring the axial positioning of the inner electrode 16 on the circuit board 13. The inner electrode circuit board soldering station 164 increases the contact area of the inner electrode 16 with the circuit board 13, facilitating the passage of a larger current. Meanwhile, when a current is passed through the internal electrode 16, the amount of heat generated at the connection portion of the internal electrode 16 and the circuit board 13 can be reduced.

The inner electrode 16 is further provided with a bending positioning groove 162, and the bending positioning groove 162 can position the bending position on one hand, and can reduce stress concentration on the other hand, so that the inner electrode 16 is folded at the bending positioning groove 162, and the folding consistency of the inner electrode 16 is ensured.

The movable end 167 of the inner electrode 16 is provided with a resistance welding resistance groove 165, which increases the current path passing through when the inner electrode 16 and the electrode boss of the columnar cell are resistance welded, thereby increasing the welding strength. The movable end 167 of the inner electrode 16 may be strip-shaped.

The inner electrode 16 is electrically connected to the electrode cap 15 through a charge and/or discharge control circuit of the circuit board 13.

The cavity formed by the second surface of the circuit board 13 and the outer shell 11 is filled with a heat-conducting glue, and the heat-conducting glue covers the components on the second surface of the whole circuit board 13 and forms a layer of heat-conducting glue layer 19, as shown in fig. 5. The movable end 167 of the inner electrode 16 and the majority of the electrode strips are exposed to the thermally conductive adhesive layer 19. In addition, the circuit board 13 does not need to be provided with a glue injection hole and an exhaust overflow hole, and the glue injection is not needed in the inner cavity formed by the circuit board 13 and the electrode cap 15.

The heat conducting glue layer 19 is covered with an inner electrode insulating sheet 17, the inner electrode insulating sheet 17 is provided with a notch, one end of the inner electrode 16 is welded on the second surface 132 of the circuit board 13, and the other end passes through the notch to be placed on the inner electrode insulating sheet 17, so that the other end of the inner electrode 16 is isolated and insulated from components on the circuit board 13. The inner electrode 16 is bent for the first time at the notch of the inner electrode insulating sheet 17, and is bent for the second time at the bending positioning groove 162.

The electrode cap 15 may be a positive electrode cap, as shown in fig. 1-3, within which the indicator light 12 is placed.

In one embodiment, the electrode cap may be a negative electrode cap, with the indicator light being disposed within the negative electrode cap. As shown in fig. 6 and 7, fig. 6 is an exploded view of a controller with an indicator lamp applied to a battery No.5 including a negative electrode cap, and fig. 7 is a schematic sectional view of fig. 6. The controller with indicator lamp 10b includes an outer case 11b, a circuit board 13b, an inner case 18b, an inner electrode 16b, a light guide assembly 14b, a negative electrode cap 15b, and an indicator lamp 12b disposed within the negative electrode cap 15 b. In this embodiment, the controller 10b includes the outer case 11b, the inner case 18b, the inner electrode 16b, and the light guide assembly 14b, and the outer case 11, the inner case 18, the inner electrode 16, and the light guide assembly 14 of the controller 10 in the previous embodiment may be configured.

The negative electrode cap 15b and the electrode cap pad of the circuit board 13b are different from the electrode cap 15 and the circuit board 13 in the previous embodiment. Specifically, as shown in fig. 8 and 9, fig. 8 is an exploded view of the negative electrode cap and the circuit board of the controller of fig. 6, and fig. 9 is a sectional view of the negative electrode cap and the circuit board of fig. 8 after assembly, the negative electrode cap 15b includes a cylindrical cap body 151b having one end opened and the other end closed and having a cavity, and a cap peak 152b surrounding the open end of the cap body 151 b. The cap 151b is exposed to the outer case 11b through the opening of the outer case 11b. The open end surface of the negative electrode cap 15b faces the first surface 131b of the circuit board 13b, and the cap peak 152b is fitted to the circuit board 13 b.

The negative electrode cap 15b is provided with a plurality of light transmission holes 153b spaced apart along a circumference of the cap body 151 b.

The light holes 153b are disposed at the junction of the cap 151b and the cap peak 152b, and extend from the cap 151b to the cap peak 152b. More specifically, the light holes 153b extend from the bottom side wall of the cap body 151b near the cap peak 152b to the cap peak 152b, but the light holes 153b do not penetrate the cap peak 151b, so that the cap peak 152b forms a continuous cap peak around the cap body 151b at the periphery of the light holes 153 b. In this way, a sufficient welding area is reserved for welding the cap peak 151b with the electrode cap pad 1312b, so that the welding strength of the cap peak 151b and the electrode cap pad 1312 is ensured.

The light transmitting hole 153b penetrates from the bottom surface of the visor 151b to the top surface of the visor. The light emitted from the indicator lamp 12b can be emitted from the bottom surface of the visor 151b toward the top surface.

The light holes 153b are elongated, and the width of the light holes 153b is increased, so that more light can be emitted from the light holes 153 b.

The light holes 153b are equally spaced along the outer circumference of the cap 151 b.

Optionally, the light holes 153b are disposed at unequal intervals along the periphery of the cap 151 b.

The height of the negative electrode cap 15b is smaller than that of the positive electrode cap, and the area ratio of the cap body 151b of the negative electrode cap 15b to the circuit board 13b is larger than that of the positive electrode cap. The width of the bill of the negative electrode cap 15b is smaller than the bill width of the positive electrode cap. As such, the electrode cap pads 1312b of the circuit board 13b are disposed close to the case pads 1311b of the circuit board 13 b. The electrode cap pads 1312b are elongated. The electrode cap pads 1312b and the channels 1313 form an annular region with the indicator light 12b disposed in the center of the annular region.

In an embodiment, the above-mentioned controller may also be applied to a battery No. 7, as shown in fig. 10 to 12, fig. 10 is an exploded view of the controller with an indicator lamp applied to the battery No. 7, fig. 11 is a schematic sectional view of the assembled controller with an indicator lamp applied to the battery No. 7, and fig. 12 is an exploded view of the electrode cap and the circuit board in fig. 10, the controller with an indicator lamp 10c including a controller housing, the circuit board 13c, the electrode cap 15c, the indicator lamp 12c and the light guide assembly 14c. Wherein the controller housing includes an outer housing 11c and an inner housing 16c.

The outer case 11c is cylindrical and made of a metal material. The outer case 11c includes a cylindrical outer side wall 111c and a limit stopper 112c forming an axial end of the outer side wall and perpendicular to the outer side wall. The limit stop 112c is disposed around the inner circumference of the outer sidewall 111 c. The inner diameter of the limit baffle 112c is smaller than the outer diameter of the circuit board 13c, so that the circuit board 13c can be limited in the outer shell 11c to prevent exposure. An opening is provided at the other end of the outer housing 11c facing the limit stopper 112c in the axial direction. The inside of the outer casing 11c forms a cavity, the limit baffle 112c is provided with a through hole, and the cavity is communicated with the opening at the other end of the outer casing 11c and the through hole of the limit baffle 112c.

The circuit board 13c may have a disk shape with a first surface 131c and a second surface 132c opposite to each other. The first surface 131c is provided with an electrode cap 15c. A circuit component, which may be a component that includes controlling charging and/or discharging, is disposed on the second surface 132c.

A ring of housing pads 1311c is also provided at the edge of the first surface 131c, the housing pads 1311c being in welded connection with the inner face of the limit stop 112 c. The welding mode can be a process method of tin melting welding, tin melting welding by an electric soldering iron, hot air tin melting welding after spraying tin paste, laser tin melting welding after spraying tin paste and the like.

The first surface 131c of the circuit board 13c is further provided with a plurality of electrode cap pads 1312c, and solder such as solder paste may be applied to the electrode cap pads 1312c for soldering the electrode caps 15c.

A channel 1313c is formed between the electrode cap pad 1312c and the electrode cap pad 1312c, and the channel 1313c separates adjacent two electrode cap pads 1312c. The effect of this channel 1313c is, on the one hand, to isolate the solder applied to the electrode cap pads from focusing adjacent solder together, thereby avoiding stress concentration, dispersing stress, and preventing electrode cap 15c from drifting during the soldering process; on the other hand, a flow-through outlet is provided for the gas generated by the flux during heating, allowing the gas to be exhausted through the channel 1313 c.

The electrode cap pads 1312c may have a fan shape. The electrode cap pads 1312c and the channels 1313c together form an annular region, each of the electrode cap pads 1312c being scattered about the center of the annular region. The electrode cap 15c covers the annular region. The center of the circuit board 13c coincides with the center of the annular region, so that the electrode cap 15c and the circuit board 13c are concentrically and coaxially disposed. The concentric coaxiality means that the central axis of the electrode cap 15c in the axial direction coincides with the central axis of the circuit board 13c in the axial direction.

The electrode cap pad 1312c is also provided with a relief groove inside or at the edge thereof to relief the via hole 1314c to prevent the via hole 11314c from being plugged by solder paste. In this way, the electrode cap pad 1312c provided with the escape groove is in the shape of a fan of an irregular shape.

The electrode cap pad 1312c is designed as a partitioned structure with isolated channels 1313c so that when the electrode cap 15c is placed on the electrode cap pad 1312c in a patch-like manner and passed through a reflow machine, the gas volatilized by the flux in the solder paste can diffuse out through the channels 1313 c. If the electrode cap pads 1312c are provided with a circular structure without partition and without isolation channels, the electrode cap 15c is easily pushed open when the soldering flux of the solder paste on the electrode cap pads 1312c volatilizes, resulting in deflection of the electrode cap 15 c. Meanwhile, compared with the whole pad without the partition, in the welding process of the circuit board 13c through the reflow soldering machine, the partition structure of the pad can control the stress of the surface of the molten solder paste on each electrode cap pad within a certain range, and can effectively inhibit the drifting condition caused when the circuit board 13c and the electrode cap 15c pass through the reflow soldering machine. If the paste is not uniformly applied, excess paste on electrode cap pad 1312c may drain toward channel 1313c, ensuring that electrode cap 15c does not drift during the bonding process.

The electrode cap 15c includes a cylindrical cap body 151c having one end opened and the other end closed and having a cavity, and a cap peak 152c surrounding the open end of the cap body 151 c. The cap 151c is exposed to the outer case 11c through the opening of the outer case 11c. The open end surface of the electrode cap 15c faces the first surface 131c of the circuit board 13c, and the cap peak 152c is fitted to the circuit board 13 c. The electrode cap pad 1312c and the channel 1313c form an annular region having an inner diameter smaller than the inner diameter of the cap peak 152c, and when the solder paste melts, the solder paste extends upward along the cap peak 152c on the inner wall of the cap body 151c, enhancing the welding strength of the cap peak 152c and the electrode cap pad 1312 c.

In other embodiments, the inner housing 12 may be eliminated and the circuit board 13 is directly soldered into the interior cavity of the outer housing 11.

An indicator lamp 12c is disposed at a middle position of an annular region formed by the electrode cap pad 1312c and the channel 1313c, and the indicator lamp 12c is located in the cap body 151 c.

The electrode cap 15c is provided with a plurality of light transmission holes 153c spaced apart along a circumference of the cap body 151 c.

The light holes 153c are disposed at the junction between the cap 151c and the cap peak 152c, and extend from the cap 151c to the cap peak 152c. More specifically, the light holes 153c extend from the bottom side wall of the cap body 151c near the cap peak 152c to the cap peak 152c, but the light holes 153c do not penetrate the cap peak 151c, so that the cap peak 152c forms a continuous cap peak around the cap body 151c at the periphery of the light holes 153 c. In this way, a sufficient welding area is reserved for welding the cap peak 151c with the electrode cap pad 1312c, so that the welding strength of the cap peak 151c and the electrode cap pad 1312c is ensured.

The height of the light transmission hole 153c extends from the bottom surface of the cap peak 151c to the top surface of the cap peak. The light emitted from the indicator light 12c can be emitted from the bottom surface of the visor 151c toward the top surface.

The width dimensions of the light holes 153c may be determined according to the diameter of the cap 151 c.

The light holes 153c are equally spaced along the outer circumference of the cap 151 c.

Optionally, the light holes 153c are disposed at unequal intervals along the periphery of the cap 151 c.

The light guide assembly 14c has a sheet-shaped ring structure, which is provided with a through hole and is sleeved on the cap 151c through the through hole, and the light guide assembly 14c covers the cap peak 152c and closes the light hole 153c.

The light guide assembly 14c includes a light guide 141c, and the light guide 141c is made of an insulating light guide material. The light guide 141c includes a first surface 1411c and a second surface 1412c disposed parallel to each other and opposite to each other. The through hole penetrates through the first surface 1411c and the second surface 1412c, the hole wall of the through hole surrounds and contacts the periphery of the cap 151c, the second surface 1412c of the light guide 141c is attached to the cap peak 152c, so that the light emitted by the indicator lamp 12c propagates along the radial direction of the light guide 141c through the light transmission hole, and an annular light emitting surface is formed on the radial periphery of the light guide 141 c.

The second surface 1412c of the light guide 141c covers both the bill 152c of the electrode cap 15c and the outer surface of the limit stopper 112 c. The light guide plate 141c extends from the outer wall of the cap 151c to be flush with the outer side wall of the outer case 11c, and the annular light emitting surface is flush with the outer side wall of the outer case 11 c.

Further, the light guide assembly 14c further includes a light shielding layer 142c, and the light shielding layer 142c is covered or coated on the light guide sheet 141 c. The light shielding layer 142c shields the light emitted upward from the light guide 141 c.

The light shielding layer 142c and the light guide plate 141c close the light holes 153c to prevent external dust or other substances from entering the cap 11 c.

Further, the controller 10c also includes an inner housing 18c disposed within the cavity of the outer housing 11 c. The inner case 18c, the circuit board 13c, and the outer case 11c are welded to each other. The welding modes of the three can be as follows: the inner case 18c and the circuit board 13c are first connected by solder reflow, and then the inner case 18c and the outer case 11c are connected by laser welding.

The inner case 18c is made of metal material and is accommodated in the cavity of the outer case 11 c. The inner case 18c includes an annular inner side wall 182c and a support edge portion 181c connected to the inner side wall 182c for supporting the circuit board 13 c. The inner side wall 182c is cylindrical. The support edge portion 181c extends to be bent toward the central axis direction of the inner side wall 182c to form a support surface for supporting the circuit board 13 c.

The supporting edge portion 181c includes a plurality of limiting legs 1811c formed at the top end of the inner side wall 182c and circumferentially spaced along the inner side wall 182, and each limiting leg 1811c extends in a curved manner toward the central axis of the inner side wall 182c to form a supporting surface for supporting the circuit board 13 c.

The stop prongs 1811c are non-equidistant along the perimeter of the inner sidewall 182 c. The number of the limit pins 1811c may be determined according to the diameter of the inner case 18c, for example, the limit pins 1811c may be 5. The height of the inner sidewall 182c may be appropriately changed according to the battery model.

An arc chamfer, i.e., an arc transition, is formed between each of the stop legs 1811c and the inner sidewall 182 c.

The bottom of the outer case 11c is retracted to the bottom of the inner case 18c to form a positioning groove for positioning the column-shaped cell. In this case, the outer case 11c is not provided with a pressure release hole.

As shown in fig. 13, it is an exploded view of the internal electrode and the circuit board of the controller with the indicator lamp applied to the battery No. 7. The second surface 132c of the circuit board 13c is further provided with an inner electrode pad 1322c for welding the inner electrode 16c, the inner electrode pad 1322c is further provided with an inner electrode positioning hole 134c, and the positioning pin 163c of the inner electrode 16 is inserted into the inner electrode positioning hole 134c, so that circumferential positioning of the inner electrode 16c on the circuit board 13c is ensured. The inner electrode 16c includes a circular movable end 167c and an inner electrode circuit board solder station 164c. The rounded movable end 167c can increase the contact area of the inner electrode with the electrode boss of the columnar cell. The electrode contact pad 164c abuts against the inner electrode pad 1322c on the second surface of the circuit board 13c, ensuring the axial positioning of the inner electrode 16c on the circuit board 13 c. The inner electrode circuit board soldering station 164c increases the contact area of the inner electrode 16c with the circuit board 13c, facilitating the passage of a larger current. Meanwhile, when a current is passed through the internal electrode 16c, the amount of heat generated at the portion where the internal electrode 16c is connected to the circuit board 13c can be reduced.

The inner electrode 16c is electrically connected to the electrode cap 15c through a charge and/or discharge control circuit of the circuit board 13 c.

The controller 10c further includes an inner electrode insulating sheet 17c, the inner electrode insulating sheet 17c has a notch, one end of the inner electrode 16c is welded on the second surface 132c of the circuit board 13c, and the other end passes through the notch to be placed on the inner electrode insulating sheet 17c, so that the other end of the inner electrode 16c is isolated and insulated from the components on the circuit board 13 c. The inner electrode 16c is bent once at the notch of the inner electrode insulating sheet 17 c.

In this embodiment, the electrode cap 15c is a positive electrode cap, and as shown in fig. 10 to 12, the indicator lamp 12c is placed inside the positive electrode cap.

In one embodiment, the electrode cap may be disposed on the negative electrode cap of battery No. 7, with the indicator light disposed within the negative electrode cap.

The present disclosure further provides a cylindrical battery 100, as shown in fig. 14, fig. 14 is an exploded schematic view of the cylindrical battery of the present disclosure, and the cylindrical battery 100 includes the controller 10 with the indicator light and the cylindrical battery cell 20. The electrode cap 15 of the controller 10 is a positive electrode cap. The columnar battery cell 20 may be a lithium ion battery cell, and an electrolyte is filled in the columnar battery cell. The columnar cell 20 has a positive electrode and a negative electrode.

The outer shell 24 of the cylindrical cell 20 is a steel shell, which is the negative electrode of the cylindrical cell 20. The top end of the columnar cell 20 is provided with a positive electrode boss 21, and the positive electrode boss 21 is connected with the positive electrode of the columnar cell 20. The periphery of the positive electrode boss 21 of the columnar cell 20 is provided with a cell insulating sheet 23, and the cell insulating sheet 23 is annular and is used for isolating the positive electrode boss 21 from being in contact with the shell 24 so as to avoid short circuit.

In addition, a cell pressure relief hole 22 is also formed in the side wall of the positive electrode boss 21.

The controller 10 is disposed at one end of the columnar cell 20 where a positive electrode boss 21 is disposed, and the positive electrode boss 21 is the positive electrode of the columnar cell 20. The internal electrode of the controller 10 is electrically connected with the positive electrode boss 21 of the columnar cell 20, so that the internal electrode of the controller 10 is electrically connected with the positive electrode of the columnar cell 20. The outer case 11 of the controller 10 is connected with the outer case 24 of the columnar cell 20, so that the outer case 11 of the controller 10 is electrically connected with the negative electrode of the columnar cell 20.

The pressure release hole 113 on the outer circumference of the outer case 11 of the controller 10 communicates with the cell pressure release hole 22 to discharge the gas generated from the column cell 20. When the columnar battery cell 20 is combined with the controller 10, the round angle of the steel shell of the columnar battery cell 20 is abutted against the positioning cylindrical surface structure of the outer shell 11 of the controller 10.

The present disclosure further provides a cylindrical battery 100b, as shown in fig. 15, fig. 15 is an exploded schematic view of the cylindrical battery of the present disclosure with a controller with an indicator light disposed at the negative end, and the present disclosure provides a cylindrical battery 100b, where the cylindrical battery 100b includes the controller with an indicator light 10b and a cylindrical battery cell 20b. The electrode cap 15b of the controller 10b is a negative electrode cap. The columnar battery cell 20b may be a lithium ion battery cell, and the inside thereof is filled with an electrolyte. The columnar cell 20b has a positive electrode and a negative electrode.

The outer shell 24b of the columnar cell 20b is an aluminum shell, which is the positive electrode of the columnar cell 20 b. The top end of the columnar cell 20b is provided with a negative electrode boss 21b, and the negative electrode boss 21 is the negative electrode of the columnar cell 20 b. The periphery of the negative electrode boss 21 of the columnar cell 20b is provided with a cell insulating sheet 23b, and the cell insulating sheet 23b is annular and is used for isolating the negative electrode boss 21b from contact with the casing 24b to avoid short circuit.

In addition, a cell pressure relief hole 22b is formed in the side wall of the negative electrode boss 21 b.

The controller 10b is disposed at one end (i.e., the negative end) of the columnar cell 20b where the negative electrode boss 21b is disposed, and an internal electrode of the controller 10b is electrically connected to the negative electrode boss 21b of the columnar cell 20b, so that the internal electrode of the controller 10 is electrically connected to the negative electrode of the columnar cell 20 b. The outer case 11b of the controller 10b is connected to the outer case 24b of the columnar battery cell 20b, so that the outer case 11b of the controller 10b is electrically connected to the positive electrode of the columnar battery cell 20 b.

The pressure release hole 113b on the outer periphery of the outer case 11b of the controller 10b communicates with the cell pressure release hole 22b to discharge the gas generated by the columnar cell 20 b. When the columnar battery cell 20b is combined with the controller 10b, the round angle of the aluminum shell of the columnar battery cell 20b is abutted against the positioning cylindrical surface structure of the outer shell 11b of the controller 10 b.

The present disclosure further provides a cylindrical battery 100c, as shown in fig. 16, fig. 16 is an exploded schematic view of the soft-pack cylindrical battery of the present disclosure, and the cylindrical battery 100c includes the controller 10c with the indicator light and the cylindrical battery cell 20c. The electrode cap 15c of the controller 10c is a positive electrode cap. The columnar cell 20c may be a lithium ion cell.

The outer shell 25c of the columnar battery cell 20c is a flexible outer shell, that is, the columnar battery cell 20c is a flexible battery, the bottom end of the flexible outer shell is provided with a negative electrode sheet 22c, and the negative electrode sheet 22c extends to the other end of the columnar battery cell 20 c. The cylindrical battery cell 20c is nested into a battery outer casing 24c, and the negative electrode sheet 22c is welded to the battery outer casing 24 c. The outer case 11c of the controller 10c is connected to the battery outer case 24 c. The columnar battery cell 20c is provided with a positive electrode sheet 21c, and the positive electrode sheet 21c is connected to an internal electrode of the controller 10 c.

In an embodiment, the controller with the indicator light may be further disposed at a negative terminal of the soft-pack battery cell. Specifically, the present disclosure further provides a columnar battery, which includes the controller with the indicator light and a columnar battery cell. The electrode cap of the controller is a negative electrode cap. The columnar cell may be a lithium ion cell.

The shell of the columnar battery cell is a soft shell, namely the columnar battery cell is a soft package battery, the bottom end of the soft shell is provided with a positive electrode plate, and the positive electrode plate extends to the other end of the columnar battery cell. The columnar battery cell is sleeved into a battery outer shell, the positive electrode plate is connected with the battery outer shell in a welding way, and a positive electrode boss is formed at the bottom end of the battery outer shell. The outer shell of the controller is connected with the outer shell of the battery. The columnar battery cell is provided with a negative electrode plate which is connected with an inner electrode of the controller.

The foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by applying the descriptions and the drawings of the present invention are included in the scope of the present invention.

Claims (18)

1. A controller with an indicator light, comprising:

A controller housing having a cavity therein, the surface of the controller housing having an opening therethrough;

The circuit board is positioned in the cavity and comprises a first surface and a second surface which are opposite to each other, and the second surface is welded with circuit components;

An electrode cap comprising: the battery pack comprises a cylindrical cap body with one end being open and the other end being closed and provided with a cavity, and a cap peak surrounding the open end of the cap body, wherein the open end face of the electrode cap faces to the first surface of the circuit board, the cap peak is attached to the circuit board, and the cap body is exposed out of the controller shell through the opening;

The indicating lamp is used for indicating the working state, is arranged on the first surface of the circuit board and is positioned in the cavity of the cap body, and a plurality of light holes which are distributed at intervals are formed in the periphery of the electrode cap edge of the cap body; and

The light guide component is of a sheet annular structure, is provided with a through hole and is sleeved on the cap body through the through hole, and covers the cap peak and closes the light hole.

2. The controller with indicator light of claim 1, wherein the visor continuously surrounds the cap body for a week.

3. The controller with indicator light according to claim 1, wherein the light guide assembly comprises a light guide sheet, the light guide sheet is made of an insulating light guide material, the light guide sheet comprises a first surface and a second surface which are parallel to each other and are arranged opposite to each other, the through hole penetrates through the first surface and the second surface, the hole wall of the through hole surrounds and contacts the periphery of the cap body, the second surface of the light guide sheet is attached to the cap brim, so that light emitted by the indicator light is transmitted along the radial direction of the light guide sheet through the light transmission hole, and an annular luminous surface is formed on the radial periphery of the light guide sheet.

4. The controller with indicator light according to claim 3, wherein the walls of the through holes of the light guide plate close the light transmission holes.

5. The controller with indicator light of claim 3, wherein the light guide assembly further comprises a light shielding layer that covers or is coated on the light guide sheet.

6. The controller with indicator light according to claim 5, wherein the light-transmitting hole is provided at a junction of the cap body and the cap peak and extends from the cap body to the cap peak, and a wall of the through hole closes the light-transmitting hole together with the light-shielding layer.

7. The controller with indicator light according to claim 6, wherein a sum of a wall height of the through hole and a thickness of the light shielding layer is larger than a height of the light transmitting hole.

8. The controller with indicator light according to claim 3, wherein the controller housing comprises an outer housing body, the outer housing body comprises a cylindrical outer side wall and a limit baffle formed at one axial end of the outer side wall, the opening is formed in the center of the limit baffle, a bonding pad is arranged at the outer edge of the first surface of the circuit board and is bonded and welded to the inner surface of the limit baffle through the bonding pad, the second surface of the light guide sheet covers the cap peak of the electrode cap and the outer surface of the limit baffle at the same time, and the light guide sheet extends from the outer wall of the cap body to be flush with the outer side wall of the outer housing body.

9. The controller with indicator light according to claim 8, wherein the controller housing further comprises an inner housing disposed within the cavity, the outer housing, the inner housing, and the circuit board being in a welded connection therebetween.

10. The controller with indicator light according to claim 9, wherein the bottom of the outer housing exceeds the bottom of the inner housing, the exceeding portion forms an annular positioning cylindrical structure, or the bottom of the outer housing is retracted inside the bottom of the inner housing, and the portion of the inner housing exceeding the outer housing forms an annular positioning groove.

11. The controller with indicator light according to claim 1, wherein the electrode cap is a positive electrode cap or a negative electrode cap.

12. The controller with an indicator light according to claim 1, wherein an inner electrode is further provided on the second surface of the circuit board, and the inner electrode is electrically connected to the electrode cap through a component of the circuit board.

13. A cylindrical battery, characterized by comprising:

a columnar cell having a positive electrode and a negative electrode; and

The controller with indicator light according to any one of claims 1 to 12, wherein the controller is mounted at one end of a positive electrode of the columnar cell, an outer case of the controller is electrically connected with a negative electrode of the columnar cell, and an inner electrode of the controller is electrically connected with the positive electrode of the columnar cell.

14. The cylindrical battery according to claim 13, wherein the cylindrical battery cell is a soft package battery cell, a negative electrode plate arranged at one end of the cylindrical battery cell is a negative electrode plate, the negative electrode plate extends towards the other end of the cylindrical battery cell, the cylindrical battery cell is sleeved into a battery outer shell, the negative electrode plate is welded with the battery outer shell, and the outer shell of the controller is connected with the battery outer shell;

The positive electrode plate arranged at the other end of the columnar battery cell is a positive electrode plate, and the positive electrode plate is connected with the inner electrode of the controller.

15. The cylindrical battery of claim 13, wherein the outer shell of the cylindrical cell is a steel shell, the steel shell of the cylindrical cell is a negative electrode of the cylindrical cell, and the outer shell of the controller is connected with the steel shell;

The columnar battery cell is provided with a positive electrode boss, the positive electrode boss is the positive electrode of the columnar battery cell, and the positive electrode boss is connected with the inner electrode of the controller.

16. A cylindrical battery, characterized by comprising:

a columnar cell having a positive electrode and a negative electrode; and

The controller with indicator light according to any one of claims 1 to 12, wherein the controller is mounted at one end of the negative electrode of the columnar cell, the outer casing of the controller is electrically connected with the positive electrode of the columnar cell, and the inner electrode of the controller is electrically connected with the negative electrode of the columnar cell.

17. The cylindrical battery according to claim 16, wherein the cylindrical battery cell is a soft package battery cell, a positive electrode sheet is arranged at one end of the cylindrical battery cell, the positive electrode sheet extends towards the other end of the cylindrical battery cell, the cylindrical battery cell is sleeved into a battery outer shell, the positive electrode sheet is welded with the battery outer shell, and the outer shell of the controller is connected with the battery outer shell;

The negative electrode arranged at the other end of the columnar battery cell is a negative electrode sheet, and the negative electrode sheet is connected with the inner electrode of the controller.

18. The cylindrical battery of claim 16, wherein the outer shell of the cylindrical cell is an aluminum shell, the aluminum shell of the cylindrical cell is a positive electrode of the cylindrical cell, and the outer shell of the controller is connected with the aluminum shell;

the columnar battery cell is provided with a negative electrode boss, the negative electrode boss is a negative electrode of the columnar battery cell, and the negative electrode boss is connected with an inner electrode of the controller.