CN217589077U - Battery signal acquisition device and battery module - Google Patents

Abstract

The utility model belongs to the technical field of power battery, a battery signal acquisition device and battery module are disclosed. This battery signal collection system includes the chassis, the circuit board, the aluminium is arranged, temperature acquisition device and collection connector, wherein circuit board and chassis fixed connection, the circuit board includes mainboard and collection piece, the aluminium is arranged and is fixed in on the chassis, it is connected with the aluminium electricity to gather the piece, temperature acquisition device includes temperature sensing branch, adopt warm component and protective structure, temperature sensing branch is connected with the mainboard electricity, it is fixed in temperature sensing branch to adopt warm component, protective structure links to each other with temperature sensing branch, and enclose to locate and adopt warm component, it pastes and locates the battery top cover plate to adopt warm component, it is connected with the mainboard electricity to gather the connector, it pastes and locates the battery top cover plate to adopt warm component, the route of adopting the temperature has been shortened, can effectively improve the accuracy of battery temperature collection, improve the response speed of temperature collection.

Description

Battery signal acquisition device and battery module

Technical Field

The utility model relates to a power battery technical field especially relates to a battery signal pickup assembly and battery module.

Background

The power battery is the whole power source of the electric automobile, and the performance of the power battery restricts the power performance of the electric automobile. When the power battery is researched and developed, the temperature condition inside the battery module under various working conditions needs to be accurately acquired, so that the structure of the battery module can be optimized, the thermal field of the battery module is uniformly distributed, and the battery module is ensured to have better charge and discharge characteristics and cycle life.

Including a plurality of batteries usually in battery module, in prior art, in order to carry out effective control to the temperature of battery, gather the temperature on the electricity connection piece through the sheetmetal, transmit thermistor, regard the temperature of electricity connection piece as battery unit's inside temperature, under battery module is in the operating mode of low power, the temperature of electricity connection piece is close with the temperature of electricity core, under battery module is in the operating mode of high power, because of the restriction of electricity connection piece overcurrent area, the temperature of electricity connection piece can sharply rise, and the temperature of battery rises more slowly, the temperature of electricity connection piece is great with the inside temperature difference of battery unit, the temperature that thermistor on the electricity connection piece gathered is unmatched with the inside true temperature of battery unit, influence battery module's discharge power. The temperature acquisition path of the battery module is an electric connection sheet, a metal sheet and a thermistor, and the temperature acquisition path is long, and the temperature acquisition accuracy and the response speed are slow.

In order to solve the problems, the battery module is provided, a temperature measuring unit is arranged between an electric connecting sheet and a battery top cover, the electric connecting sheet applies pressure to the temperature measuring unit to enable the temperature measuring unit to be attached to the battery top cover, the temperature measuring unit comprises a temperature collecting element and a heat conducting pad, the temperature collecting element is arranged on an extending strip, the heat conducting pad is arranged between the extending strip and the battery top cover, the temperature collecting unit of the battery module directly collects the temperature of the battery top cover to achieve temperature collection of the battery unit, the temperature of the battery top cover is closer to the real temperature inside the battery unit compared with the temperature of the electric connecting sheet, the temperature difference between the temperature collecting element and the temperature collecting element can be within an acceptable range even under severe working conditions, but the temperature collecting path of the structure is the battery top cover-heat conducting pad-extending strip-temperature collecting element, the temperature collecting path is longer, the response speed of temperature collection is lower, and the temperature of the battery top cover and the temperature of the extending strip have a certain difference due to the longer temperature collecting path, and therefore the accuracy of temperature collection is not high.

SUMMERY OF THE UTILITY MODEL

According to the utility model discloses an aspect, the utility model provides a battery signal collection system can effectively improve battery temperature acquisition's accuracy, improves temperature acquisition's response speed.

To achieve the purpose, the utility model adopts the following technical proposal:

a battery signal acquisition device, comprising:

a chassis;

the circuit board is fixedly connected with the chassis and comprises a main board and a collecting piece;

the aluminum bar is fixed on the chassis, and the collecting piece is electrically connected with the aluminum bar;

the temperature acquisition device comprises a temperature-sensing branch, a temperature acquisition element and a protection structure, wherein the temperature-sensing branch is electrically connected with the mainboard, the temperature acquisition element is fixed on the temperature-sensing branch, the protection structure is connected with the temperature-sensing branch and surrounds the temperature acquisition element, and the temperature acquisition element is attached to the battery top cover plate;

and the acquisition connector is electrically connected with the mainboard.

Optionally, a connecting hole is formed in the chassis, the temperature acquisition device is arranged in the connecting hole in a penetrating mode, and the temperature sensing branch is abutted to the main board.

Optionally, the battery further comprises a heat conducting member, the heat conducting member is disposed between the temperature collecting element and the protection structure, and the heat conducting member is attached to the battery top cover.

Optionally, the printed circuit board further comprises a first reinforcing plate, and the first reinforcing plate is connected with the circuit board.

Optionally, the temperature sensor further comprises a second reinforcing plate, the second reinforcing plate is disposed on a side of the temperature sensing branch not connected to the temperature collecting element, and the second reinforcing plate is connected to the first reinforcing plate.

Optionally, the collecting element and the main board are electrically connected through a connecting element, and the connecting element is in an S-shaped structure.

Optionally, a first positioning hole is formed in the aluminum row, a first positioning column is arranged on the chassis, and the first positioning hole is connected with the first positioning column.

Optionally, a second positioning hole is formed in the circuit board, a second positioning column is arranged on the chassis, and the second positioning hole is connected with the second positioning column.

Optionally, one end of the circuit board, where the collecting connector is disposed, is of a stepped structure.

According to another aspect of the utility model, the utility model provides a battery module, including foretell battery signal pickup assembly.

The utility model has the advantages that:

the temperature acquisition element is attached to the battery top cover plate, so that the temperature acquisition path is a battery top cover plate and the temperature acquisition element, the temperature of the battery top cover plate is directly acquired through the temperature acquisition element, the temperature acquisition path is short, the temperature acquisition accuracy is improved, and the temperature acquisition response speed is improved. The temperature acquisition element is surrounded and arranged through the protection structure, the temperature acquisition element can be protected, the temperature acquisition element is prevented from being damaged due to collision or extrusion, and the reliability of temperature acquisition work of the temperature acquisition element is improved.

Drawings

Fig. 1 is a top view of a battery signal collecting device provided by the present invention;

fig. 2 is a bottom view of the battery signal collecting device provided by the present invention;

fig. 3 is a schematic structural diagram of the temperature acquisition device provided by the present invention;

fig. 4 is a partial view of an assembly view of the collecting connector and the circuit board provided by the present invention.

In the figure:

100. a chassis; 110. connecting holes; 120. a first positioning post; 130. a second positioning column; 200. a circuit board; 210. a main board; 220. collecting parts; 230. a connecting member; 240. a second positioning hole; 300. aluminum row; 310. a first positioning hole; 400. a temperature acquisition device; 410. branch of temperature sensing; 420. a temperature collection element; 430. a protective structure; 500. a collection connector; 600. a first reinforcing plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The temperature acquisition path of the existing battery module is long, the real temperature of the battery cannot be acquired, the temperature acquisition accuracy is low, and the temperature acquisition response is slow.

In view of the above problems, in an embodiment of the present invention, a battery signal collecting device is provided, as shown in fig. 1-3, the battery signal collecting device includes a chassis 100, a circuit board 200, an aluminum row 300, a temperature collecting device 400 and a collecting connector 500, wherein the circuit board 200 includes a motherboard 210 and a collecting member 220, the collecting member 220 is used to collect power information of a battery, the circuit board 200 is fixedly connected to the chassis 100, the aluminum row 300 is fixed on the chassis 100, in operation, the aluminum row 300 is connected to a terminal of the battery, and further, a plurality of batteries are connected in series through the aluminum row 300, the temperature collecting device 400 includes a temperature sensing branch 410, a temperature collecting element 420 and a protection structure 430, wherein, the temperature sensing branch 410 is electrically connected to the motherboard 210, the temperature collecting element 420 is connected to the temperature sensing branch 410, the temperature collecting element 420 is attached to a top cover plate of the battery, and is used to collect the temperature of the battery, the protection structure is disposed on the temperature sensing branch 410 and surrounds the temperature collecting element 420, and protects the temperature collecting element 420 from collision and extrusion, and the collecting connector 500 is connected to the motherboard 210.

The temperature collecting element 420 is attached to the battery top cover plate, so that the temperature collecting path can be shortened, the direct collection from the battery top cover plate to the temperature collecting element 420 is realized, the temperature difference caused by the overlong temperature collecting path is avoided, the temperature collecting accuracy is improved, meanwhile, the temperature collecting response speed can be improved due to the shortened temperature collecting path, and the temperature collecting efficiency is improved; protecting temperature element 420 through setting up protective structure 430 and protecting, can avoid adopting temperature element 420 to receive the collision and extrude, guarantee to adopt temperature element 420 to adopt the reliability of temperature work, and then improve above-mentioned battery signal pickup assembly's life, reduce the fault rate.

Further, with reference to fig. 2, when the battery signal collecting device works, the aluminum row 300, the circuit board 200, the collecting connector 500, and the like are generally fixed on the upper side of the chassis 100, and the battery is fixed on the lower side of the chassis 100, so that a connecting hole 110 may be formed in the chassis 100, the temperature collecting device 400 is inserted into the connecting hole 110, the bottom of the temperature sensing branch 410 of the temperature collecting device 400 abuts against the main board 210, and the temperature collecting element 420 can be inserted into the battery top cover plate through the connecting hole 110.

Preferably, in order to improve the transmission efficiency of temperature, can set up the heat-conducting piece between adopting temperature component 420 and protective structure 430, and make heat-conducting piece and the laminating setting of battery top cover piece, to adopting temperature component 420 transmission heat through the heat-conducting piece, can form the buffer layer between battery top cover piece and adopting temperature component 420, be favorable to guaranteeing to adopt temperature component 420 still can be through keeping heat-conduction between heat-conducting piece and the battery top cover piece under various impact or vibration operating modes, thereby be favorable to maintaining the continuity and the stability that adopt temperature component 420 to gather the temperature signal.

Preferably, in an embodiment, the heat conducting member may be a heat conducting glue, the heat conducting glue is filled between the protection structure 430 and the temperature collection element 420, the temperature collection element 420 is disposed in the heat conducting glue after being solidified, the heat conducting glue can completely protect the temperature collection element 420, and the heat conducting glue can transmit heat to the temperature collection element 420 from all places of the heat conducting glue, so as to increase the corresponding speed of temperature collection.

Further, in an embodiment, a first reinforcing plate 600 may be disposed to fixedly connect the circuit board 200 and the main board 210, and since the circuit board 200 is flexible and not easy to take, the circuit board 200 is connected to the first reinforcing plate 600, so that the hardness of the circuit board 200 can be improved, the circuit board 200 and the chassis 100 can be assembled conveniently, the assembling difficulty can be reduced, and the assembling efficiency can be improved.

Preferably, a second reinforcing plate may be disposed on the temperature-sensitive branch 410, the second reinforcing plate is disposed on a side of the temperature-sensitive branch 410 where the temperature-sensing element 420 is not disposed, the other side of the second reinforcing plate is connected to the first reinforcing plate 600, the first reinforcing plate 600 applies pressure to the second reinforcing plate, so as to ensure that the temperature-sensing element 420 is attached to the battery top cover, the second reinforcing plate bears the pressure of the first reinforcing plate 600 on the temperature-sensing element 420, and is beneficial to protecting the temperature-sensing element 420 from being damaged by mechanical force, thereby being beneficial to improving the working reliability and the service life of the temperature-sensing element 420.

Further, in one embodiment, the second reinforcing plate may be connected to the first reinforcing plate 600 by means of bonding; in other embodiments, the second reinforcing plate may be abutted against the first reinforcing plate 600, and may be provided according to actual needs.

Further, the collecting element 220 is electrically connected to the main board 210 through the connecting element 230, in one embodiment, the connecting element 230 may have an S-shaped structure, and the connecting element 230 having the S-shaped structure may play a role of buffering when the electric core is damaged and expands, so as to prevent the collecting element 220 from being damaged due to stress, and improve the service life of the collecting element 220.

Further, in one embodiment, the acquisition member 220 may be a nickel sheet; in other embodiments, the collecting element 220 may also be a copper sheet, and it is within the scope of the present application as long as the collecting element 220 can electrically connect the collecting element 220 with the motherboard 210.

Further, can set up first locating hole 310 on aluminium is arranged 300, set up first locating post 120 on chassis 100, first locating hole 310 links to each other with first locating post 120, and then fixes aluminium row 300 on chassis 100, avoids aluminium row 300 to rock at work, guarantees that aluminium row 300 is connected with the reliability of electric core utmost point post, improves the reliability of above-mentioned battery signal acquisition device work.

Preferably, in order to improve the reliability of the connection between the aluminum row 300 and the chassis 100, a plurality of first positioning holes 310 may be provided on the aluminum row 300, and correspondingly, a plurality of first positioning posts 120 may be provided on the chassis 100, so as to avoid the connection between the aluminum row 300 and the chassis 100 from being affected by the damage of one first positioning post 120.

Preferably, in one embodiment, the first positioning posts 120 may be connected to the first positioning holes 310 through a hot riveting process, so as to improve the connection strength between the aluminum row 300 and the bottom chassis 100.

Further, a second positioning hole 240 may be disposed on the circuit board 200, a second positioning pillar 130 may be disposed on the chassis 100, and the second positioning hole 240 is connected to the second positioning pillar 130, so as to fix the circuit board 200 on the chassis 100, thereby preventing the circuit board 200 from moving due to collision during the working process, and ensuring the working reliability of the circuit board 200.

Preferably, in order to improve the reliability of the connection between the circuit board 200 and the chassis 100, a plurality of second positioning holes 240 may be disposed on the circuit board 200, and correspondingly, a plurality of second positioning pillars 130 may be disposed on the chassis 100, so as to avoid that the connection between the circuit board 200 and the chassis 100 is affected due to a damaged second positioning pillar 130.

Preferably, in one embodiment, the second positioning posts 130 may be connected to the second positioning holes 240 through a hot riveting process, so as to improve the connection strength between the circuit board 200 and the bottom chassis 100.

Further, as shown in fig. 4, the end of the circuit board 200 on which the collecting connector 500 is disposed is a stepped structure, so that the height of the battery signal collecting device can be reduced as a whole, and the weight and cost of the battery signal collecting device can be reduced.

Further, in one embodiment, the chassis 100 can be manufactured by a plastic molding method, and the plastic molding process has low mold cost and high production efficiency.

The utility model discloses a to adopt temperature element 420 subsides to locate battery top cap piece, can effectively detect the true temperature of electric core, and adopt the temperature route short, adopt temperature response speed fast. Through setting up protective structure 430 and enclosing to locate and adopt temperature element 420, can play the effect of circumference protection to adopting temperature element 420, avoid adopting temperature element 420 to receive the collision and extrude, improve reliability and the life who adopts temperature element 420 work. Through set up the heat-conducting piece between adopting warm component 420 and protective structure 430, can improve the guard action to adopting warm component 420, and improve and adopt the area of contact between warm component 420 and the heat-conducting piece, improve the heat conduction effect of heat-conducting piece, and then improve the response speed who adopts the temperature. The aluminum bar 300 and the circuit board 200 are fixed on the chassis 100 by a hot riveting process, so that the risk of falling off of the aluminum bar 300 and the circuit board 200 can be reduced. The stepped structure is arranged at one end of the circuit board 200 connected with the acquisition connector 500, so that the height of the whole battery signal acquisition device can be effectively reduced, the weight is reduced, and the cost is reduced.

The utility model also provides a battery module, including foretell battery signal pickup assembly.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A battery signal acquisition device, comprising:

a chassis (100);

the circuit board (200), the circuit board (200) is fixedly connected with the chassis (100), and the circuit board (200) comprises a main board (210) and a collecting piece (220);

the aluminum bar (300), the aluminum bar (300) is fixed on the chassis (100), and the collecting piece (220) is electrically connected with the aluminum bar (300);

the temperature acquisition device (400) comprises a temperature sensing branch (410), a temperature acquisition element (420) and a protection structure (430), wherein the temperature sensing branch (410) is electrically connected with the main board (210), the temperature acquisition element (420) is fixed on the temperature sensing branch (410), the protection structure (430) is connected with the temperature sensing branch (410) and is surrounded on the temperature acquisition element (420), and the temperature acquisition element (420) is attached to the top cover plate of the battery;

a collection connector (500), the collection connector (500) being electrically connected with the motherboard (210).

2. The battery signal acquisition device according to claim 1, wherein a connection hole (110) is formed in the chassis (100), the temperature acquisition device (400) is inserted into the connection hole (110), and the temperature sensing branch (410) abuts against the main board (210).

3. The battery signal acquisition device according to claim 1, further comprising a heat conducting member disposed between the temperature acquisition element (420) and the protective structure (430), wherein the heat conducting member is attached to the battery top cover.

4. The battery signal acquisition device according to any one of claims 1-3, further comprising a first reinforcing plate, wherein the first reinforcing plate (600) is connected to the circuit board (200).

5. The battery signal collecting device according to claim 4, further comprising a second reinforcing plate provided at a side of the temperature sensitive branch (410) not connected to the temperature collecting element (420), the second reinforcing plate being connected to the first reinforcing plate (600).

6. The battery signal acquisition device according to claim 1, wherein the acquisition member (220) and the main board (210) are electrically connected by a connecting member (230), and the connecting member (230) has an S-shaped structure.

7. The battery signal acquisition device according to claim 1, wherein a first positioning hole (310) is formed in the aluminum row (300), a first positioning post (120) is formed in the chassis (100), and the first positioning hole (310) is connected with the first positioning post (120).

8. The battery signal collecting device according to claim 7, wherein a second positioning hole (240) is formed in the circuit board (200), a second positioning post (130) is formed in the chassis (100), and the second positioning hole (240) is connected to the second positioning post (130).

9. The battery signal acquisition device according to claim 1, wherein the end of the circuit board (200) provided with the acquisition connector (500) is of a stepped structure.

10. A battery module comprising the battery signal acquisition apparatus according to any one of claims 1 to 9.

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