CN114899525A - Battery and electric working machine - Google Patents

Abstract

The invention relates to the technical field of power batteries, and provides a battery and an electric operation machine, wherein the battery comprises a battery box body, a thermal management system, an electrical system and a battery module; a plurality of mounting grooves arranged in parallel are formed in the battery box body; the heat management system comprises a plurality of liquid cooling plates, the liquid cooling plates are arranged in the battery box body and are correspondingly inserted into the mounting grooves one by one; the battery modules are arranged in the battery box body and connected to the liquid cooling plate; the electrical system comprises a module collecting copper bar which is electrically connected with each battery module. The liquid cooling plate not only plays a heat exchange function, but also is used for fixing the battery module, and the battery module, the liquid cooling plate and the module collect copper bars and are integrated together, so that a plurality of standard boxes are not required to be placed in a frame system, the structural redundancy is reduced, the space utilization rate of the battery is high, the overall energy density is higher, the process is simpler, and the reliability is higher.

Description

Batteries and Electric Working Machines

technical field

The present invention relates to the technical field of power batteries, in particular to a battery and an electric working machine.

Background technique

The power battery can provide power for electric vehicles, electric bicycles and other transportation vehicles. It is mainly different from the starting battery used for starting the car engine. The existing power batteries mostly use valve-sealed lead-acid batteries, open tubular lead-acid batteries, etc. Acid batteries and lithium iron phosphate batteries, etc. The power battery has very superior performance, its discharge voltage is stable, and its storage time has significant advantages. In the related art, the battery system of commercial vehicles is mainly in the form of a combination of different standard boxes, which is equivalent to making an additional set of standard box frame systems after the standard boxes are assembled and combined, and the standard boxes, electrical systems and thermal management systems are set independently. The situation of pipeline crossing is serious, the structure is redundant, the overall energy density of the battery system is low, the space utilization rate is low, the connecting lines and pipelines are numerous and complex, the process cost is high, and the reliability is low.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention proposes a battery, the battery module is directly placed in the battery box, the battery module, the liquid cooling plate and the module collection copper bar are integrated together, and there is no need to place multiple standard boxes in the frame system, The structural redundancy is reduced, the space utilization rate of the battery is high, and the overall energy density is high.

Embodiments of the present invention also provide an electric working machine.

The battery proposed according to the embodiment of the first aspect of the present invention includes:

a battery box, wherein a plurality of installation grooves arranged in parallel are formed in the battery box;

a thermal management system, comprising a plurality of liquid-cooling plates, the plurality of liquid-cooling plates are arranged in the battery box, and are plugged in one-to-one correspondence with the plurality of the installation slots;

a plurality of battery modules arranged in the battery box and connected to the liquid cooling plate;

The electrical system includes a module collecting copper bar, and the module collecting copper bar is electrically connected to each of the battery modules.

According to an embodiment of the present invention, the battery case further includes:

a plurality of sub-boxes, the sub-boxes have a cylindrical structure with two ends passing through, the plurality of sub-boxes are arranged side by side and communicate with each other, and each of the sub-boxes is formed with the installation groove;

A bottom plate, arranged on one side of the plurality of sub-boxes, is suitable for sealing the sub-boxes located at the edge positions, and the plurality of sub-boxes and between the bottom plate and the sub-boxes are sealed and connected .

According to one embodiment of the present invention, the sub-box body includes opposite first and second ends, the first end is formed with a sealing groove adapted to receive the second end of the other sub-box body .

According to an embodiment of the present invention, the inner wall of the battery box is further provided with a thermal insulation layer.

According to an embodiment of the present invention, the thermal management system further includes:

a water-cooling unit, arranged on the outside of the battery box and connected to the battery box;

a thermal management component, electrically connected to the water cooling unit;

A plurality of refrigerant pipes are connected to the water cooling unit and the liquid cooling plate, and are located on one side of the battery box.

According to an embodiment of the present invention, the electrical system further includes:

a circuit management component, electrically connected to the module collecting copper bar;

The power-exchange connector is connected to the circuit management assembly through a wire.

According to an embodiment of the present invention, the electric wires are located in the battery case and located on opposite sides of the plurality of refrigerant pipes.

According to an embodiment of the present invention, the battery case further includes:

a hoisting assembly, disposed on one side of the plurality of sub-boxes away from the ground, and connected to the plurality of sub-boxes;

The supporting member is arranged on one side of the plurality of sub-boxes close to the ground, and is connected to the plurality of sub-boxes.

According to an embodiment of the present invention, the hoisting assembly includes:

a hanger, connected to the plurality of sub-boxes;

A shielding box is connected to the plurality of sub-boxes, and the shielding box is suitable for placing thermal management components and/or circuit management components.

The electric working machine provided according to the embodiment of the second aspect of the present invention includes the battery provided according to the embodiment of the first aspect of the present invention.

The above-mentioned one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

The battery provided according to the embodiment of the first aspect of the present invention includes a battery box, a thermal management system, an electrical system, and a battery module; a plurality of installation slots suitable for placing liquid cooling plates are formed in the battery box; the thermal management system includes a plurality of installation grooves. A liquid-cooling plate, a plurality of liquid-cooling plates are arranged in the battery box, and are inserted into the installation slots in one-to-one correspondence; the battery module is arranged in the battery box and connected to the liquid-cooling plate; the electrical system includes the module collecting copper The module collecting copper row is electrically connected to each battery module. The liquid-cooling plate not only plays the heat exchange function, but also is used to fix the battery module. The battery module, the liquid-cooling plate and the module collection copper bar are integrated together. It is not necessary to place multiple standard boxes in the frame system, which reduces the structure. Redundancy, high space utilization of the battery, high overall energy density, simple process and high reliability.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the accompanying drawings required for the description of the embodiments or related technologies. Obviously, the accompanying drawings in the following description are only the For some embodiments of the invention, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a perspective view of a battery provided by a first embodiment of the present invention;

2 is an exploded view of the battery provided by the first embodiment of the present invention;

3 is an exploded view of a plurality of sub-boxes and a bottom plate provided by an embodiment of the present invention;

4 is a perspective view of a plurality of sub-boxes and a bottom plate provided by an embodiment of the present invention;

5 is a top view of a sub-box provided by an embodiment of the present invention;

6 is a front view of a sub-box provided by an embodiment of the present invention;

Fig. 7 is a partial enlarged view at A of Fig. 5;

8 is a perspective view of a battery case provided by a second embodiment of the present invention;

9 is a perspective view of a battery case provided by a third embodiment of the present invention.

Reference number:

100. Battery box;

110, sub-box body; 112, installation groove; 114, first end; 116, second end; 118, sealing groove; 1102, first reinforcing rib; 1104, second reinforcing rib; 1106, bolt;

120, hoisting assembly; 122, hoisting frame; 124, shielding box; 124a, first shielding box; 124b, second shielding box; 1242, cooling hole;

130. Supporting parts;

140, bottom plate; 142, installation box;

150, thermal management system; 152, water cooling unit; 154, liquid cooling plate; 156, refrigerant pipe; 158, thermal management components;

160. Battery module;

170, electrical system; 172, module collection copper bar; 174, electric wire; 176, power exchange connector; 178, circuit pipeline assembly.

Detailed ways

In order to make the purpose, technical solutions and advantages of the invention clearer, the technical solutions in the invention will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the invention, not all of them. Example. Based on the embodiments in the invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right" , "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing this Inventive embodiments and simplified descriptions are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, Or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present invention in specific situations.

In the embodiments of the present invention, unless otherwise expressly specified and limited, the first feature "above" or "under" the second feature may be in direct contact with the first and second features, or the first and second features pass through the middle indirect contact with the media. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structures, materials, or features are included in at least one example or example of embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

In the related art, the battery system of commercial vehicles is mainly in the form of a combination of different standard boxes, which is equivalent to making an additional set of standard box frame systems after the standard boxes are assembled and combined, and the standard boxes, electrical systems and thermal management systems are set independently. The situation of pipeline crossing is serious, the structure is redundant, the overall energy density of the battery system is low, the space utilization rate is low, the connecting lines and pipelines are numerous and complex, the process cost is high, and the reliability is low. Referring to FIG. 1 to FIG. 9 , the battery provided according to the embodiment of the first aspect of the present invention includes a battery case 100 , a thermal management system 150 , a battery module 160 and an electrical system 170 .

The battery box 100 has a certain accommodating space, and the battery modules 160 can be placed in the battery box 100 in a multi-row, multi-column and multi-layer manner, so as to increase the storage capacity of the battery, thereby improving the battery life.

A plurality of installation grooves 112 arranged in parallel are formed in the battery case 100 , and the installation grooves 112 are used for placing the liquid cooling plate 154 .

It should be noted that the installation grooves 112 can be arranged horizontally, vertically, or obliquely. The distance between the adjacent installation grooves 112 is adapted to the size of the battery module 160 to ensure that Space is fully utilized.

The thermal management system 150 includes a plurality of liquid cooling plates 154 . The plurality of liquid cooling plates 154 are disposed in the battery case 100 and are inserted into the plurality of installation slots 112 in one-to-one correspondence.

The number of the battery modules 160 is multiple, the battery modules 160 can be placed in the battery case 100 in multiple rows and/or multiple columns and/or multiple layers, and each battery module 160 is connected to the liquid cooling board 154 . The liquid cooling plate 154 not only performs a heat exchange function, but also can fix the battery module 160 .

The electrical system 170 includes a module collecting copper bar 172, and the module collecting copper bar 172 is electrically connected to each battery module 160, and different battery modules 160 can be connected in series or in parallel, without the need to set up an independent standard box, reducing the number of boxes. wiring harness and box structure.

Referring to FIGS. 1 to 9 , in the battery case 100 , multiple rows and/or multiple columns and/or multiple layers of battery modules 160 , the battery modules 160 , the liquid cooling plate 154 and the module collecting copper bars can be arranged 172 are integrated together, there is no need to set up an independent standard box in the battery box 100, unnecessary structures are reduced, and the space utilization rate is high. The liquid cooling plate 154 is inserted into the installation slot 112 to fully combine the thermal management system 150, the battery box 100 and the battery module 160, thereby improving the space utilization rate and reducing the difficulty of pipeline arrangement.

In some embodiments, the battery case 100 includes a plurality of sub-cases 110 . The sub-cases 110 have a cylindrical structure with two ends passing through, and both ends of the cylindrical structure have openings. A plurality of sub-boxes 110 are arranged side by side, and adjacent sub-boxes 110 communicate with each other to form an integral box structure. Each sub-box 110 is formed with a mounting slot 112 suitable for placing the liquid cooling plate 154 therein.

It should be noted that a plurality of sub-boxes 110 may be arranged vertically side by side, or may be arranged in layers horizontally, and the number of sub-boxes 110 is not limited.

In other embodiments, the battery box 100 may be formed by splicing a plurality of side panels, or may be an integral structure, as long as space requirements are met.

Temperature changes will occur when the battery module 160 is working and during heat exchange with the outside. In order to improve the stability of the battery module 160 during operation and reduce the impact of temperature changes on the battery module 160, the battery in the battery box 100 can be The module 160 performs temperature management.

In some embodiments, the battery case 100 further includes a bottom plate 140 , the bottom plate 140 is disposed on one side of the plurality of sub-cases 110 , and the bottom plate 140 is used to close the sub-cases 110 located at the edge positions, and between the plurality of sub-cases 110 And the sub-box body 110 and the bottom plate 140 are both hermetically connected.

The bottom plate 140 is suitable for sealing the sub-box 110 located at the edge position, so that the sub-box 110 is in a sealed state as a whole, which is beneficial to the installation of the battery module and the temperature management. The battery module 160 is located in a sealed space, the probability of being interfered by external temperature factors is reduced, and the temperature stability of the battery module 160 is improved. When the battery box 100 is connected to the thermal management system 150, the heat exchange efficiency of the thermal management system 150 is higher than High, more energy saving and environmental protection.

In some embodiments, the sub-box body 110 includes an opposite first end 114 and a second end 116, the first end 114 is formed with a sealing groove 118, and the second end 116 of the adjacent sub-box body 110 is adapted to be inserted in the sealing in slot 118.

The second ends 116 of the sub-boxes 110 are plugged into the first ends 114 of the adjacent sub-boxes 110 , and so on, and the plurality of sub-boxes 110 are connected in sequence to form a layered/parallel box structure. The number of sub-boxes 110 is not limited, and can meet the needs of different kinds of power batteries. In the power battery with higher battery life requirements, the number of sub-boxes 110 is larger, and in the power battery with lower battery life requirements, the number of sub-boxes 110 is smaller.

The sealing groove 118 is matched with the second end 116 of the other sub-box 110 to form a sealing structure after connection, which can reduce the heat exchange between the battery box and the outside world.

In some embodiments, a thermal insulation layer (not shown in the figure) is provided on the inner wall of the battery case 100 , and the thermal insulation layer may be thermal insulation cotton, mesh cloth, foam, or the like.

In order to facilitate the installation of the thermal insulation layer, the thermal insulation layer is arranged on the inner wall of the sub-box body 110. After the sub-box bodies 110 are connected in parallel, the thermal insulation layers contact each other to form a closed thermal insulation space.

According to the battery provided by the embodiment of the present invention, the thermal management system 150 is connected to the plurality of battery modules 160, and can manage the temperature inside the battery modules 160 and the battery case 100 to ensure that the battery modules 160 are at a safe and efficient temperature. within the range.

In some embodiments, the thermal management system 150 further includes a water cooling unit 152 , a refrigerant pipe 156 and a thermal management assembly 158 .

The water cooling unit 152 is disposed outside the battery case 100 and is connected to the battery case 100 . The thermal management component 158 is electrically connected to the water cooling unit 152 for automatically or manually controlling the startup and operating power of the water cooling unit 152 . The number of refrigerant pipes 156 is multiple, including at least one liquid inlet pipe and at least one liquid outlet pipe. The refrigerant pipes 156 are connected to the water cooling unit 152 and the liquid cooling plate 154. The water cooling unit 152 dissipates heat to the outside, which can reduce the refrigerant in the refrigerant pipes 156. When the temperature of the liquid cooling plate 154 is increased, the refrigerant circulates in the liquid cooling plate 154 along the cooling medium pipe 156, which can reduce the temperature of the liquid cooling plate 154, thereby realizing the temperature management of the battery.

It should be noted that the thermal management component 158 can control the operating power of the water cooling unit 152 according to the input or output power of the battery, or install a temperature sensor in the battery box 100 to control the operating power of the water cooling unit 152 according to the temperature information of the temperature sensor .

In order to avoid mutual interference between pipelines, a plurality of refrigerant pipes 156 are arranged on the same side in the battery case 100, and the liquid inlet and outlet of the liquid cooling plate 154 are also arranged on the same side.

According to the battery provided by the embodiment of the present invention, the electrical system 170 includes a module collecting copper bar 172, and the module collecting copper bar 172 can be connected to each battery module 160. There is no need to set an independent standard box in the battery, which reduces unnecessary The structure of the battery case 100 has a high space utilization rate, and the pipeline layout in the battery box 100 is managed in a unified manner, which reduces the situation of pipeline crossing.

In some embodiments, the electrical system 170 also includes a circuit management component 178 , a power replacement connector 176 , and electrical wiring 174 .

The circuit management component 178 is electrically connected to the module collecting copper bar 172 , and can supply power to each battery module 160 or receive power from each battery module 160 .

It should be noted that, the number of battery modules 160 is large, and individual damage may occur when the battery is used for a long time. The circuit management component 178 can use the remaining battery modules 160 to continue to output stable voltage and current values to ensure that the battery is working. stability.

The power exchange connector 176 is connected to the circuit management component 178 through a wire 174, and the wire 174 includes a plurality of high and low voltage lines. During charging, the power-exchange connector 176 is connected to the power grid or a power generation facility to store electrical energy in the battery module 160 . When discharging, the power exchange connector 176 releases the electrical energy stored in the battery module 160 for use by the electrical equipment.

According to the battery provided by the embodiment of the present invention, the thermal management system 150 includes a plurality of refrigerant pipes 156, and the electrical system 170 includes a plurality of electric wires 174. The refrigerant pipes 156 and the electric wires 174 need to be arranged separately to avoid mutual interference between the pipes.

In some embodiments, the wires 174 are located within the battery case 100 on opposite sides of the plurality of refrigerant tubes 156 .

It can be understood that the thermal management system 150 and the electrical system 170 are arranged in partitions, which avoids the intersection between various pipelines, reduces the interference between pipelines, and also reduces the difficulty of assembling the battery, and the process is relatively simple. The battery module 160 is respectively connected to the electrical system 170 and the thermal management system 150 on both sides, no independent standard box is required, there is no redundant structure in the battery box 100, the space utilization efficiency is high, and the energy density of the battery is high.

The battery provided according to the embodiment of the present invention needs to be transported, installed and parked during use, so some fixed support structures need to be provided.

In some embodiments, the battery case 100 further includes a hoisting assembly 120 and a supporting member 130 .

The hoisting assembly 120 is disposed on one side of the plurality of sub-boxes 110 away from the ground, and when a hoisting machine is used to connect to the hoisting assembly 120, the position of the battery can be moved.

In some embodiments, the hoisting assembly 120 includes a hoisting bracket 122 connected to the plurality of sub-boxes 110 .

It can be understood that the suspending frame 122 has a certain structural strength and can bear the loads of the multiple sub-boxes 110 , the battery modules and other components. When the sub-boxes 110 have a certain size, there may be a plurality of hoisting brackets 122, and the plurality of hoisting brackets 122 are symmetrically connected to the plurality of sub-boxes 110, and the phenomenon of overturning will not occur during hoisting. The number of the hoisting bracket 122 may also be one. In this case, the hoisting bracket 122 is arranged at the center position of one side of the plurality of sub-boxes 110, and the plurality of sub-boxes 110 will not tilt during hoisting.

It should be noted that the hoisting frame 122 may be a specially-made suspension structure, or may be a spliced or welded steel truss structure, and the hoisting frame 122 has multiple hoisting points in the horizontal plane, such as horizontal hoisting points and vertical hoisting points, etc. , where landscape and portrait represent relative positions only.

The support member 130 is disposed on one side of the plurality of sub-boxes 110 close to the ground, and is used to bear the load of the battery box 100 or the battery. The supporting member 130 is connected to the plurality of sub-boxes 110, and can fix the positions of the plurality of sub-boxes 110, which increases the stability of the sub-boxes 110 and the battery modules 160, and can also avoid the contact between the sub-boxes 110 or the battery modules 160. On the ground, the wear and corrosion of the sub-box 110 and the battery module 160 are reduced.

In some embodiments, the support member 130 is a steel truss structure, and the steel truss structure has high strength and light weight, which is beneficial to reduce the total weight of the battery box 100 .

In other embodiments, the supporting member 130 is a base with an integrated structure, and the size of the base is adapted to the size of the sub-box 110 .

It should be noted that, the support member 130 and the battery case 100 are detachably connected, for example, through bolt connection. When the battery box 100 includes the bottom plate 140 , the installation box 142 is also connected to the support member 130 by bolts.

In the battery system, the thermal management system 150 and the electrical system 170 are both connected to the battery box 100 , and a shielding structure can be provided to protect the thermal management system 150 and the electrical system 170 from erosion of electronic components and pipelines by external factors such as rain.

In some embodiments, the pendant assembly 120 also includes a shield box 124 adapted to house the thermal management assembly 158 and/or the circuit management assembly 178 .

The shielding box 124 is arranged on one side of the plurality of sub-boxes 110, and has a accommodating space inside. The thermal management component 158 and/or the circuit management component 178 are placed in the shielding box 124, and will not be disturbed by the external environment and rainwater, so that the related The electronic components work stably, which improves the stability and reliability of the battery.

In some embodiments, please refer to FIG. 1 , the number of the shielding box 124 is one, the shielding box 124 traverses one side of the plurality of sub-boxes 110 and has a larger volume, the thermal management component 158 , the circuit management component 178 and the water cooling The units 152 are all placed in the shielding box 124 .

It should be noted that when the water-cooling unit 152 is placed in the shielding box 124, the shielding box 124 is provided with heat dissipation holes 1242 at the positions corresponding to the water-cooling unit 152, and the water-cooling unit 152 releases heat to the outside through the heat-dissipating holes 1242, thereby improving the heat exchange efficiency .

In other embodiments, please refer to FIG. 8 or FIG. 9 , the shielding box 124 includes a first shielding box 124a and a second shielding box 124b, the first shielding box 124a is used for placing the thermal management component 158, and the second shielding box 124b is for placement of circuit management components 178 .

The first shielding box 124a and the second shielding box 124b are disposed separately, which facilitates the installation and use of the thermal management assembly 158 and the circuit management assembly 178 and avoids mutual interference between different electronic components.

In some embodiments, the second end 116 of the sub-box 110 is provided with at least one first reinforcing rib 1102. The first reinforcing rib 1102 can enhance the structural strength of the sub-box 110 and prevent the sub-box 110 from appearing under the action of loads. deformed.

At the same time, the first reinforcing rib 1102 is disposed below the installation groove 112, and the first reinforcing rib 1102 can also be used to provide support for the liquid cooling plate 154, thereby improving the stability of the battery module 160 and the liquid cooling plate 154, and improving the The structural strength of the battery case 100 is improved.

In other embodiments, at least one second reinforcing rib 1104 is further provided on the side wall of the sub-box body 110 , and a plurality of second reinforcing ribs 1104 are arranged symmetrically, which can improve the deformation resistance of the sub-box body 110 .

The adjacent sub-boxes 110 are connected by bolts 1106, and the bolts 1106 are connected to the second reinforcing ribs 1104 on the adjacent two-layer sub-boxes 110, so that a plurality of second reinforcing ribs 1104 can be connected end to end to form an integrated structure. The overall strength of the battery case 100 is improved.

It should be noted that the bolts 1106 and the second reinforcing ribs 1104 may be disposed on the inside or the outside of the sub-box body 110, and the bolts 1106 are connected to two adjacent sub-box bodies 110 and two adjacent second reinforcing ribs 1104.

According to the embodiment of the present invention, the bottom plate 140 is disposed on one side of the plurality of sub-boxes 110, and is suitable for sealing the sub-boxes 110 located at the edge position.

In some embodiments, a mounting box 142 is formed on the base plate 140 , and the mounting box 142 is adapted to accommodate the power exchange connector 176 of the electrical system 170 .

The power exchange connector 176 is electrically connected to the circuit management component 178 through the high and low voltage lines, and the circuit management component 178 is connected to the battery module 160 through the module collecting copper bar 172. The power exchange connector 176 can charge the battery module 160 and can also supply power to the electrical components. The power exchange connector is integrated with the bottom plate 140, which saves the space of the battery box 100 and improves the space utilization rate.

The electric working machine provided according to the embodiment of the second aspect of the present invention includes the battery provided according to the embodiment of the first aspect of the present invention.

In an electric working machine, multiple rows and/or multiple columns and/or multiple layers of battery modules 160 can be arranged in the battery box 100, which can improve the energy density of the battery. The battery does not need to be provided with an independent standard box, unnecessary structures are reduced, and the space utilization rate is high. At the same time, the pipeline arrangement in the battery box 100 is managed in a unified manner, which reduces the situation of pipeline crossing. A liquid cooling plate 154 is inserted into the installation slot 112. The liquid cooling plate 154 is not only used for fixing the battery module 160, but also plays a temperature control function, and fully combines the thermal management system 150 with the battery box 100 to improve space utilization. , reducing the difficulty of pipeline layout.

To sum up, according to the battery and the electric working machine provided by the embodiments of the present invention, the battery includes a battery case 100 , a thermal management system 150 , an electrical system 170 and a battery module 160 ; The installation slot 112 for placing the liquid-cooling plate 154; the thermal management system 150 includes a plurality of liquid-cooling plates 154, and the plurality of liquid-cooling plates 154 are arranged in the battery case 100 and are inserted into the installation slots 112 in a one-to-one correspondence; the battery mold The group 160 is disposed in the battery box 100 and connected to the liquid cooling plate 154 ; the electrical system 170 includes a module collecting copper bar 172 , and the module collecting copper bar 172 is electrically connected to each battery module 160 . The liquid cooling plate 154 not only plays a heat exchange function, but is also used to fix the battery module 160. The battery module 160, the liquid cooling plate 154 and the module collecting copper bar 172 are integrated together, and there is no need to place multiple standard boxes in the frame system. Internally, structural redundancy is reduced, the space utilization rate of the battery is high, the overall energy density is high, the process is simple, and the reliability is high.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. a battery, is characterized in that, comprises: a battery box, wherein a plurality of installation grooves arranged in parallel are formed in the battery box; a thermal management system, comprising a plurality of liquid-cooling plates, the plurality of liquid-cooling plates are disposed in the battery box, and are inserted into the plurality of the installation slots in one-to-one correspondence; a plurality of battery modules arranged in the battery box and connected to the liquid cooling plate; The electrical system includes a module collecting copper bar, and the module collecting copper bar is electrically connected to each of the battery modules. 2. The battery according to claim 1, wherein the battery case comprises: a plurality of sub-boxes, the sub-boxes have a cylindrical structure with two ends passing through, the plurality of sub-boxes are arranged side by side and communicated with each other, and each of the sub-boxes is formed with the installation groove; A bottom plate, arranged on one side of the plurality of sub-boxes, is suitable for enclosing the sub-boxes located at the edge positions, and the plurality of sub-boxes and between the bottom plate and the sub-boxes are sealed and connected . 3 . The battery of claim 2 , wherein the sub-box includes opposing first and second ends, the first end being formed with a sealing groove adapted to receive another the second end of the sub-box. 4 . The battery according to claim 1 , wherein the inner wall of the battery box is further provided with a thermal insulation layer. 5 . 5. The battery according to any one of claims 1 to 4, wherein the thermal management system further comprises: a water-cooling unit, arranged on the outside of the battery box and connected to the battery box; a thermal management component, electrically connected to the water cooling unit; A plurality of refrigerant pipes are connected to the water cooling unit and the liquid cooling plate, and are located on one side of the battery box. 6. The battery of claim 5, wherein the electrical system further comprises: a circuit management component, electrically connected to the module collecting copper bar; The power-exchange connector is connected to the circuit management assembly through a wire. 7 . The battery of claim 6 , wherein the electric wires are located in the battery case and located on opposite sides of the plurality of refrigerant pipes. 8 . 8. The battery according to claim 2 or 3, wherein the battery case further comprises: a hoisting assembly, disposed on the side of the plurality of sub-boxes away from the ground, and connected to the plurality of sub-boxes; The supporting member is arranged on the side of the plurality of sub-boxes facing the ground, and is connected to the plurality of sub-boxes. 9. The battery of claim 8, wherein the hoisting assembly comprises: a hanger, connected to the plurality of sub-boxes; A shielding box is connected to the plurality of sub-boxes, and the shielding box is suitable for placing thermal management components and/or circuit management components. 10. An electric working machine, comprising the battery according to any one of claims 1 to 9.

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