Summary of the invention
The object of the invention is to, a kind of voltage check device is provided, this voltage check device can monitor the information of voltage of each monocell of secondary battery module in the lump.
For realizing described purpose, a kind of voltage check device of secondary battery module is provided, this voltage check device is used at least one secondary battery module, wherein, secondary battery module comprises a plurality of secondary cells, and each secondary cell has positive terminal, negative terminal and a pair of monocell terminal that is electrically connected respectively with these positive terminals and negative terminal, voltage check device comprises: the first printed-wiring board (PWB) that configures according to the mode of the monocell terminal of covering, twice battery module, be installed on the first printed-wiring board (PWB) and be the shared arithmetic processing apparatus of the output voltage that detects each secondary cell, the first printed-wiring board (PWB) is connected monocell terminal electricity and is mechanically connected with secondary battery module first connection path.
The information of voltage that occurs in positive pole and negative terminal is supplied with to arithmetic processing apparatus by monocell terminal, first connection path and the first printed-wiring board (PWB), and arithmetic processing apparatus can detect the output voltage of each secondary cell according to information of voltage.
In addition, first connection path has: be arranged at respectively the monocell terminal the first joint portion, be arranged at the first printed-wiring board (PWB) and with the first joint portion respectively corresponding the second joint portion, with the mutual electric and coupling apparatus of combination mechanically in the first joint portion and corresponding the second joint portion.
The first printed-wiring board (PWB) of voltage check device is electrically connected with the monocell terminal via coupling apparatus, therefore, does not need for the distribution that is electrically connected between monocell terminal and the first printed-wiring board (PWB).In addition, therefore coupling apparatus, in order to fix the first printed-wiring board (PWB) with respect to secondary battery module, does not need this coupling apparatus hookup in addition mechanically in conjunction with monocell terminal and the first printed-wiring board (PWB).
Therefore, for secondary battery module electricity and when mechanically connecting voltage check device, can reduce the needed number of components of connection of electricity and machinery, therefore, not only the connection operation of voltage check device becomes simple, and, can reduce the manufacturing cost of the secondary battery module that possesses voltage check device.
In addition, preferred the first joint portion and the second joint portion are threaded hole and through hole, and coupling apparatus is to pass the bolt that through hole is screwed into threaded hole.
In addition, first connection path also has the first deflection device, this the first deflection device can be mobile in a direction side of first and second joint portion is approaching with respect to the opposing party and that leave, therefore, monocell terminal and the first printed-wiring board (PWB) firmly are electrically connected via coupling apparatus, and voltage check device can positively detect the output voltage of each secondary cell.
In detail, the first deflection device has: the distribution with flexibility that separate to arrange and have respectively the movable terminal of the second joint portion, each movable terminal and the first printed-wiring board (PWB) are electrically connected from the first printed-wiring board (PWB).
Each movable terminal and other movable terminal are independent mutually, can move freely in the direction with the face orthogonal of the first printed-wiring board (PWB).Therefore, each movable terminal and corresponding monocell terminal are not affected by other monocell terminal etc., and via well electric combination of coupling apparatus, and arithmetic processing apparatus can positively detect the output voltage of each secondary cell.
In addition, arithmetic processing apparatus detects the output voltage with each secondary cell of other secondary battery module of secondary battery module adjacency, and voltage check device also comprises: the second printed-wiring board (PWB) that configures according to the mode of the monocell terminal of the secondary battery module that covers other, the cable that is electrically connected with the monocell terminal electricity of the second printed-wiring board (PWB) and the secondary battery module of being connected and the second access path that mechanically connects, with first and second printed-wiring board (PWB).
Therefore, when the first printed-wiring board (PWB) and the second printed-wiring board (PWB) were electrically connected via cable, arithmetic processing apparatus also can detect the output voltage of each secondary cell of other secondary battery module.In this situation, can reduce the quantity of the desired arithmetic processing apparatus of power brick, cheap power brick can be provided.
In addition, the second access path has: be arranged at respectively the monocell terminal the 3rd joint portion, be arranged at the second printed-wiring board (PWB) and respectively four joint portion corresponding with the 3rd joint portion, with the 3rd joint portion and corresponding the 4th joint portion mutually electricity and the coupling apparatus of combination mechanically.
Therefore, the second printed-wiring board (PWB) is electrically connected with the monocell terminal via coupling apparatus too, therefore, does not need the distribution that is electrically connected between monocell terminal and the second printed-wiring board (PWB).In addition, therefore coupling apparatus, in order to fix the second printed-wiring board (PWB) with respect to secondary battery module, does not need the hookup outside this coupling apparatus with monocell terminal and the mechanically combination of the second printed-wiring board (PWB).
In addition, the second access path also has the second deflection device, this the second deflection device can with a side of the 3rd and the 4th joint portion with respect to the opposing party connect from direction mobile, therefore, monocell terminal and the second printed-wiring board (PWB) firmly are electrically connected via coupling apparatus, and voltage check device can positively detect the output voltage of each secondary cell.
In addition, the second deflection device has: the distribution with flexibility that separate to arrange and have respectively the movable terminal of the 4th joint portion, each movable terminal and the second printed-wiring board (PWB) are electrically connected from the second printed-wiring board (PWB).
Each movable terminal and other movable terminal are independent mutually, and can move freely in the direction with the face quadrature of the second printed-wiring board (PWB).Therefore, each movable terminal and corresponding monocell terminal are not affected by other monocell terminal etc. can, via well electric combination of coupling apparatus, and the arithmetic processing apparatus that is arranged at the first printed-wiring board (PWB) can positively detect the output voltage of each secondary cell.
Thus, the voltage check device of secondary battery module can monitor the information of voltage of each monocell of secondary battery module in the lump.
Embodiment
The secondary battery module 1 of Fig. 1 comprises a plurality of, 4 monocells 2 for example, and these monocells 2 for example are lithium ion batteries, are rectangular shape.In detail, each monocell 2 outer box of metal of comprising electrode bundle, accommodating the monocell box of this electrode bundle, this monocell box and electrolytic solution are sealed together.Electrode bundle has positive pole, negative pole and the dividing plate of film-form, and these positive poles, negative pole and the dividing plate state alternately to overlap is wound in around the axis of electrode bundle.In addition, the monocell box is by having electrical insulating property and stable on heating synthetic resin forms.
As can be seen from Figure 1,4 monocells 2 are alignment arrangements and form monocell row 8 in one direction, and the axis of these monocell row 8 is to extending with the direction of the length direction quadrature of monocell 2.In monocell row 8, at 2 intervals of guaranteeing to stipulate of the monocell that adjoins each other.For guaranteeing such interval, secondary battery module 1 also contains and covers 6.This lid 6 is formed by electrically insulating material, from top covering monocell row 8.Particularly, lid 6 has the outer peripheral edges 26 of surrounding monocell row 8, is disposed at the next door 27 of 2 of the monocells of adjacency respectively.As shown in Figure 2, the monocell 2 of adjacency clips next door 27, and next door 27 has determined the interval of 2 of the monocells of adjacency.In addition, be formed with the opening 28 of rectangle in the central authorities of lid 6, this opening 28 extends along monocell row 8.
On the other hand, each monocell 2 has respectively positive terminal 3a and negative terminal 3b, and these positive poles and negative terminal 3a, 3b pass above monocell 2 and cover 6 and give prominence to.Specifically, positive pole and negative terminal 3a, 3b are connected with positive pole and the negative electricity of monocell 2 respectively, on the other hand, connect and cover 6 corresponding holes.That is, on lid 6, be formed with respectively the hole that allows positive pole and negative terminal 3a, 3b to connect.
In addition, positive pole and negative terminal 3a, 3b are disposed at the both ends of monocell 2, and still, the monocell 2 in the monocell row 8 configures along the mode of monocell row 8 alternative arrangements according to positive pole and negative terminal 3a, 3b.
As can be seen from Figure 1, dispose 3 bus 7a, 7b, 7c at lid 6.Bus 7a is arranged in a sidepiece (seeing downside at Fig. 1) of monocell row 8, and bus 7b, 7c lay respectively at the other side of monocell row 8.Bus 7a is electrically connected positive terminal 3a and the negative terminal 3b of 2 monocells 2 of the central authorities that are positioned at monocell row 8.Bus 7b be electrically connected the end be positioned at monocell row 8 monocell 2 negative terminal 3b and with the positive terminal 3a of the monocell 2 of these monocell 2 adjacency, bus 7c be electrically connected the other end that is positioned at monocell row 8 monocell 2 positive terminal 3a and with the negative terminal 3b of the monocell 2 of these monocell 2 adjacency.Therefore, monocell 2 electricity in the monocell row 8 are connected in series.
In detail, the leading section of positive pole and negative terminal 3a, 3b forms screw, and, on bus 7a, 7b, 7c, form respectively the hole that corresponding positive pole and negative terminal 3a, 3b are connected.In addition, the positive pole and negative terminal 3a, the 3b that connect bus 7a, 7b, 7c are screwed into nut 29, and these nuts 29 covers under 6 the state clipping between bus 7a, 7b, 7c and the monocell row 8, with these buss 7, cover 6 and monocell row 8 combine.That is, bus 7a, 7b, 7c not only are connected in series the monocell 2 in the monocell row 8, and, in monocell row 8, double as to link and cover 6 link key element.
In addition, each monocell 2 has a pair of monocell terminal 4, and these monocell terminals 4 are disposed at monocell 2 and cover between 6.One monocell terminal 4 is electrically connected with positive terminal 3a, on the other hand, has the front end that extends and expose from the opening 28 of above-mentioned lid 6 to negative terminal 3b.Another monocell terminal 4 is electrically connected with negative terminal 3b, on the other hand, has the front end that extends and expose from opening 28 to positive terminal 3a.Guarantee to have the interval of regulation between the front end of a pair of monocell terminal 4, and be formed with respectively threaded hole 5 at the leading section of monocell terminal 4.
Lay respectively at the two ends of monocell row 8 and the positive pole that is not connected with bus 7a, 7b, 7c and negative terminal 3a, 3b and be electrically connected with two other negative terminal and positive terminals of secondary battery module via bus respectively, other secondary battery module has the structure same with above-mentioned secondary battery module 1.In this situation, 3 secondary battery modules are connected in series, and form a power brick.
With reference to Fig. 2, the voltage check device 9 of the first embodiment is installed at secondary battery module 1.
Voltage check device 9 comprises the printed-wiring board (PWB) 10 of rectangle, and this printed-wiring board (PWB) 10 configures in the mode of covering 6 opening 28.Arithmetic processing apparatus 14 is installed on printed-wiring board (PWB) 10.
On printed-wiring board (PWB) 10, corresponding position be formed with through hole 11 respectively with the threaded hole 5 of above-mentioned monocell terminal 4, these through holes 11 are electrically connected with arithmetic processing apparatus 14 via the printed wiring 12 corresponding with printed-wiring board (PWB) 10.
Bolt 13 is screwed into each threaded hole 5 by the through hole 11 corresponding with each threaded hole 5, bolt 13 not only with between monocell terminal 4 and the printed wiring 12 corresponding with printed-wiring board (PWB) 10, be to be electrically connected between monocell terminal 4 and the arithmetic processing apparatus 14, and, with printed-wiring board (PWB) 10 via monocell terminal 4 and monocell row 8 mechanical bond.Therefore, the information of voltage (information of voltage) that occurs in positive pole and negative terminal 3a, 3b supplies to arithmetic processing apparatus 14 via monocell terminal 4, bolt 13 and printed-wiring board (PWB) 10, and arithmetic processing apparatus 14 can detect the output voltage of each monocell 2 according to information of voltage.
When detecting the output voltage of each monocell 2, arithmetic processing apparatus 14 needn't be electrically connected with whole monocell terminals 4.Namely, the positive pole and the potential difference (PD) between negative terminal 3a, 3b that are connected by bus 7a, 7b, 7c are zero, therefore, for the positive pole and negative terminal 3a, the 3b that are connected by bus 7, as long as only the side of these terminals 3a, 3b is via monocell terminal 4 and printed-wiring board (PWB) 10, namely arithmetic processing apparatus 14 is electrically connected and gets final product.In this situation, the quantity of the monocell terminal 4 that should be electrically connected with arithmetic processing apparatus 14 reduces, and therefore, the operation of voltage check device 9 being installed to secondary battery module 1 becomes easy.The printed-wiring board (PWB) 10 of the voltage check device 9 of the first embodiment is electrically connected with monocell terminal 4 via bolt 13, therefore, does not need the distribution that is electrically connected between monocell terminal 4 and the printed-wiring board (PWB) 10.In addition, therefore bolt 13, with respect to secondary battery module 1 fixing printing wiring board 10, does not need the hookup outside the bolt 13 with monocell terminal 4 and mechanically combination of printed-wiring board (PWB) 10.
Therefore, for secondary battery module 1 electricity and when mechanically connecting voltage check device 14, can reduce the desired number of components of connection of electricity and machinery, therefore, not only the connection operation of voltage check device 14 becomes easily, and can reduce the manufacturing cost of the secondary battery module 1 that possesses voltage check device 14.
In addition, printed-wiring board (PWB) 10 can comprise socket 16.This socket 16 is electrically connected with arithmetic processing apparatus 14 via printed wiring 17, and on the other hand, other monocell terminal and the arithmetic processing apparatus 14 of secondary battery module that is used for will forming via printed-wiring board (PWB) 10` and cable 22 power brick is electrically connected uses.Printed-wiring board (PWB) 10` has the structure same with printed-wiring board (PWB) 10 except not possessing this point of arithmetic processing apparatus 14, to be mounted with the same mode of other secondary battery module.Therefore, printed-wiring board (PWB) 10` also has the socket 16` same with socket 16, and cable 22 has respectively the plug that can insert socket 16,16` at its two ends.
Therefore, when the socket 16 of printed-wiring board (PWB) 10 and the socket 16` of printed-wiring board (PWB) 10` were electrically connected via cable 22, arithmetic processing apparatus 14 also can detect the output voltage of each monocell of other secondary battery module.In this situation, can reduce the quantity of the desired arithmetic processing apparatus 14 of power brick, thereby cheap power brick is provided.
Printed-wiring board (PWB) 10 shown in Figure 2 has a socket 16, but, as mentioned above, in the situation that power brick is formed by 3 secondary battery modules, the printed-wiring board (PWB) 10 that possesses voltage device 9 has two sockets 16, is electrically connected with the printed-wiring board (PWB) 10` of other two secondary battery modules via these sockets 16 and cable 22.In addition, in the situation that power brick is formed by the secondary battery module more than 4, printed-wiring board (PWB) 10 can have the socket with the printed-wiring board (PWB) 10` respective amount that should be electrically connected.
Below, the voltage check device 9 of the second embodiment is described with reference to Fig. 3.
The voltage check device 9 of the second embodiment comprises printed-wiring board (PWB) 110.This printed-wiring board (PWB) 110 comprises a plurality of U word otch 120 of being formed at its outer peripheral edges, is configured in movable terminal 20 in these U word otch 120 respectively, and movable terminal 20 has respectively above-mentioned through hole 11.Therefore, each movable terminal 20 is in the state that separates from printed-wiring board (PWB) 110, is electrically connected with printed-wiring board (PWB) 110 corresponding printed wirings 12 via the distribution 24 with flexibility.
That is, each movable terminal 20 and other movable terminal 20 are independent mutually, and can move freely in the direction with the face orthogonal of printed-wiring board (PWB) 110.Therefore, each movable terminal 20 is not affected by other monocell terminal 4 grades with corresponding monocell terminal 4, and via well electric combination of bolt, and arithmetic processing apparatus 14 can positively detect the output voltage of each monocell 2.
As shown in Figure 3, the printed-wiring board (PWB) 110` corresponding with above-mentioned printed-wiring board (PWB) 10` is also same with printed-wiring board (PWB) 110, contains movable terminal 20`.Therefore, the corresponding movable terminal 20` of the monocell terminal of other secondary battery module also positively is electrically connected, and voltage check device 9 also can positively detect the output voltage of each monocell of secondary battery module.
Below, the voltage check device 9 of the 3rd embodiment is described with reference to Fig. 4.
The voltage check device 9 of the 3rd embodiment is included in the slit 34 of guaranteeing between the monocell terminal 4` of monocell 2 and correspondence and the flexible pars convoluta 30 that is formed at monocell terminal 4`.
Flexible pars convoluta 30 is disposed at the cardinal extremity of the monocell terminal 4` that is electrically connected with positive terminal or negative terminal and has between the front end of threaded hole 5.Particularly, flexible pars convoluta 30 bends to the U font by the part with monocell terminal 4` and forms, the leading section that allows monocell terminal 4` to the movement of orthogonal directions above the monocell 2, that is, allow the deflection of monocell terminal 4`.Therefore, monocell terminal 4` and printed-wiring board (PWB) 10 firmly are electrically connected via bolt 32, and voltage check device 14 can positively detect the output voltage of each monocell 2.
In addition, be substituted in the upper method that forms flexible pars convoluta 30 of monocell terminal 4`, also can form the flexible pars convoluta at printed-wiring board (PWB) 10 (10`), these flexible pars convolutas form the ring-type of surrounding through hole 11.
In addition, also can use the volute spring (not shown) of electric conductivity to replace flexible pars convoluta 30.These volute springs have and allow bolt 32 to insert logical internal diameters, are disposed between printed-wiring board (PWB) 10 (10`) and the corresponding monocell terminal 4, with these printed-wiring board (PWB)s 10 (10`) and monocell terminal 4` electrical connection.In this case, each monocell terminal 4 and printed-wiring board (PWB) 10 (10`) are electrically connected well via helical spring stretching, and therefore, voltage check device 14 can positively detect the output voltage of each monocell 2.
In addition, as long as printed-wiring board (PWB) 10 (10`) itself has flexibility, then above-mentioned flexible pars convoluta and volute spring just can omit.
In addition, monocell terminal and printed-wiring board (PWB) are by bolt 32 combinations, but, in the combination of these monocell terminals and printed-wiring board (PWB), can example such as the combination of button fits kind, use the combination of resin clip, in addition, monocell terminal and printed-wiring board (PWB) also can utilize thermal weld to mutually combine.
For example, secondary battery module can be to be formed by the secondary cell except lithium ion battery, and the inner structure of this secondary cell also is not limited only to above-mentioned structure.
In addition, the monocell quantity that comprises in secondary battery module is arbitrarily.