CN211350708U

CN211350708U - Battery module, battery pack and electric vehicle

Info

Publication number: CN211350708U
Application number: CN202020132657.4U
Authority: CN
Inventors: 郑楚豪; 郑卫鑫; 曾而平; 曾毅
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-08-25
Anticipated expiration: 2030-01-20

Abstract

The utility model provides a battery module, which comprises a bracket end cover, a plurality of battery cores, a groove and a temperature collection assembly, wherein the battery cores are arranged on one side of the bracket end cover; the groove is formed in one surface, facing the battery cell, of the support end cover, and comprises a notch facing the battery cell and a sealing groove bottom facing away from the battery cell; the temperature acquisition assembly comprises a temperature sensing probe which is contained in the groove, the temperature sensing probe is used for monitoring the temperature of the battery cell, and the groove is filled with heat-conducting glue to seal the temperature sensing probe in the groove. The utility model also provides a battery package and electric motor car. The utility model provides a battery module is with the setting of thalposis probe in the recess and glue through the heat conduction and fix it for the thalposis probe is difficult for droing, and stability is high, and temperature acquisition's accuracy is higher, and the security is higher.

Description

Battery module, battery pack and electric vehicle

Technical Field

The utility model relates to a battery field, concretely relates to battery module, battery package and electric motor car.

Background

With the continuous popularization of new energy automobiles, the use requirement of power batteries in the new energy automobiles becomes higher and higher. During the use of the power battery pack, the temperature inside the battery rises, so that the temperature inside the battery needs to be monitored in real time to prevent explosion caused by overhigh temperature. The structure of the temperature sensing probe for monitoring the internal temperature of the battery is a water drop type at present, the fixing mode is that the temperature sensing probe is fixed on a plastic part of a battery module through a rubber part, and the structure is complex; the rubber part is relatively soft, so that the position of the temperature sensing probe cannot be completely fixed, and the temperature sensing probe is easy to shake in the vibration process, so that the temperature is not accurately acquired; furthermore, because this temperature sensing probe need wait to install in the outside of structure again after the structure installation of all batteries is accomplished, lead to this temperature sensing probe can only install the place that the hand can contact, so can only place on the battery in the battery electric core, if there is electric core needs to be violently placed, and there is the fixed electric core of structure below the electric core, the water-cooling board need be placed on electric core, the highest temperature of module will not be on the upper surface this moment, the highest temperature will be below, but because temperature sensing probe can only be placed on electric core, so will lead to the temperature of gathering can not feedback out the highest temperature of module, there is the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The present disclosure is directed to solving at least one of the problems in the prior art. To this end, in a first aspect of the present application, there is provided a battery module including:

a bracket end cover;

the battery cells are arranged on one side of the bracket end cover;

the groove is formed in one surface, facing the battery cell, of the support end cover and comprises a notch facing the battery cell and a sealing groove bottom facing away from the battery cell;

the temperature acquisition assembly comprises a temperature probe, the temperature probe is contained in the groove and used for monitoring the temperature of the battery cell, and heat-conducting glue is filled in the groove to seal the temperature probe in the groove.

In one embodiment of the present application, the surface of the thermally conductive glue in the groove is flush with the bracket end cap around the notch.

In one embodiment of the present application, the battery module further includes:

the battery information collector is arranged on one side, back to the battery core, of the support end cover and connected with the temperature collection assembly and used for collecting the temperature of the battery core collected by the temperature sensing probe.

In an embodiment of this application, adopt the temperature subassembly still includes pencil and nickel piece, the temperature sensing probe is connected the one end of pencil, the nickel piece is connected the other end of pencil, the temperature sensing probe passes through the nickel piece is connected battery information collector.

In one embodiment of the present application, the nickel plate is welded to the battery information collector through a metal wire.

In an embodiment of the present application, a wire harness hole is formed in a position, close to the groove, of the bracket end cover, the wire harness hole is communicated with the groove, and the wire harness penetrates out of the wire harness hole.

In one embodiment of the present application, the wire harness hole includes a lead port and a wire outlet, the lead port communicates with one end of the groove and is disposed on a side wall of the groove; the wire outlet is arranged on the surface of the support end cover back to the battery cell.

In an embodiment of the present application, the groove and the nickel plate are disposed at two ends of the bracket end cover along a second direction, and the second direction is a height direction of the battery module.

In one embodiment of the present application, the nickel plate is disposed on the bracket end cover corresponding to a side of the battery information collector near the groove.

In an embodiment of the application, a plurality of mounting holes are formed in the bracket end cover, and one end of each of the plurality of battery cells is fixedly mounted on the bracket end cover through the mounting holes.

In one embodiment of the present application, an end of the temperature-sensitive probe is disposed toward the battery cell.

In a second aspect of the present application, there is provided a battery pack including a plurality of battery modules as set forth in any one of the above.

In a third aspect of the present application, there is provided an electric vehicle including the battery pack described above.

The utility model provides a battery module is with the setting of thalposis probe in the recess and glue through the heat conduction and fix it for the thalposis probe is difficult for droing, and stability is high, and temperature acquisition's accuracy is higher, and the security is higher.

Drawings

Fig. 1 is a schematic structural diagram of a battery module according to a first embodiment of the present invention.

Fig. 2 is a partially enlarged view of a portion M in fig. 1.

Fig. 3 is a schematic structural view of a bracket end cover in a battery module according to a first embodiment of the present invention.

Fig. 4 is a schematic structural view of a bracket end cover facing a battery cell side in a battery module according to a first embodiment of the present invention.

Fig. 5 is a partial schematic view of a groove portion in a battery module according to a first embodiment of the present invention.

Fig. 6 is a schematic structural view of a bracket end cover facing a battery cell in a battery module according to a second embodiment of the present invention.

Detailed Description

The following description is of the preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, a number of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations are also considered to be the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; 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 according to specific situations by those skilled in the art.

Referring to fig. 1 to 5, a first embodiment of the present invention provides a battery module 10, where the battery module 10 includes a support end cap 100, a plurality of battery cells 200, a groove 300, and a temperature collecting assembly, and the plurality of battery cells 200 are arranged on one side of the support end cap 100. In this embodiment, the plurality of battery cells 200 are arranged along a first direction a, where the first direction a is a width direction of the battery cells 200, a length direction of the battery cells 200 is a third direction C, and the battery cells 200 extend in the third direction C, where the third direction C is perpendicular to the first direction a.

Referring to fig. 4 and 5, the groove 300 is formed on a side of the holder end cap 100 facing the battery cell 200, and the groove 300 includes a notch 310 facing the battery cell 200 and a sealing groove bottom 320 facing away from the battery cell 200. I.e., the recess 300 is open towards the cell 200 and the side facing away from the cell 200 is closed.

The temperature collection assembly comprises a temperature sensing probe 410, the temperature sensing probe 410 is accommodated in the groove 300, the temperature sensing probe 410 is used for monitoring the temperature of the battery cell 200, and the groove 300 is filled with heat-conducting glue 500 so as to seal the temperature sensing probe 410 in the groove 300. The temperature sensing probe 410 is sealed and fixed in the groove 300 by the heat conducting glue 500, so that the stability of the temperature sensing probe 410 is improved, and the temperature sensing probe 410 can accurately detect the temperature of the battery cell 200. In addition, because the groove bottom 320 of the groove 310 is sealed, the heat conducting glue 500 is filled in the groove 300 and cannot overflow from the side of the bracket end cover 100 opposite to the battery cell 200, so that the temperature sensing probe 410 can be firmly sealed between the groove 310 and the battery cell 200, and the stability is further improved.

The utility model provides a battery module 10 sets up temperature sensing probe 410 in recess 300 and fixes it through heat-conducting glue 500 for temperature sensing probe 410 is difficult for droing, and stability is high, and temperature acquisition's accuracy is higher, and the security is higher.

In order to better monitor the temperature condition of each battery cell 200, a groove 300 may be provided in the bracket end cap 100 corresponding to each battery cell 200, and a temperature-sensitive probe 410 may be provided in the groove 300, so that the temperature monitoring accuracy is higher and the safety is higher. In other embodiments, the number of the grooves 300 and the temperature-sensing probes 410 can be set according to the actual temperature monitoring requirement.

In a further embodiment, the surface of the thermal paste 500 in the groove 300 is flush with the holder end cap 100 around the notch 310. So that the battery cell 200 is tightly attached to the surface of the thermal conductive adhesive 500, and the temperature sensing probe 410 in the groove 300 can effectively monitor the temperature of the battery cell 200. In addition, the temperature-sensing probe 410 can be firmly fixed in the groove 300.

Referring to fig. 2, in a further embodiment, the battery module 10 further includes a battery information collector 600, the battery information collector 600 is disposed on a side of the bracket end cover 100 opposite to the battery cell 200, and the battery information collector 600 is connected to the temperature collection component for collecting the temperature of the battery cell 200 collected by the temperature sensing probe 410. In this embodiment, the battery information collector 600 is disposed in the middle of the bracket end cover 100.

Referring to fig. 2 and 5, in a further embodiment, the temperature collection assembly further includes a wire harness 420 and a nickel plate 430, the temperature sensing probe 410 is connected to one end of the wire harness 420, the nickel plate 430 is connected to the other end of the wire harness 420, and the temperature sensing probe 410 is connected to the battery information collector 600 through the nickel plate 430. In the present embodiment, the nickel plate 430 is brazed to the other end of the wire harness.

In a further embodiment, the nickel plate 430 is welded to the battery information collector 600 by a wire 440. Wherein the metal wire 440 is preferably an aluminum wire.

In a further embodiment, the bracket end cap 100 is provided with a harness hole 110 (as shown in fig. 5) near the groove 300, the harness hole 110 is communicated with the groove 300, and the harness 420 passes through the harness hole 110. The wiring harness 420 is routed from the wiring harness hole 110, so that the unevenness of the surface facing the battery cell 200 caused by the wiring harness 420 from the bracket cover plate 100 to the surface facing the battery cell 200 can be avoided, and the contact tightness between the temperature-sensitive probe 410 and the battery cell 200 is further influenced. In addition, the wiring harness 420 is routed from the wiring harness hole 110, so that a circuit structure can be saved, and the internal space of the battery module 10 can be increased.

In a further embodiment, the wire harness hole 110 includes a lead outlet 111 and a lead outlet (not shown), the lead outlet 111 communicates with one end of the groove 300 and is disposed on a sidewall of the groove 300; the outlet is arranged on the surface of the support end cap 100 facing away from the battery cell 200.

In a further embodiment, the grooves 300 and the nickel plates 430 are disposed at both ends of the holder end cap 100 in the second direction B (shown in fig. 2), which is the height direction of the battery module 10. The second direction B is perpendicular to the first direction a and the third direction C, respectively. In this embodiment, the groove 300 and the nickel sheet 430 are disposed on two sides of the battery information collector 600, wherein the groove 300 is disposed on one side of the bracket end cover 100 departing from the battery information collector 600, and the nickel sheet 430 is disposed on the same side as the battery information collector 600. Wherein the groove 300 is provided at the lower end of the holder end cap 100 in the second direction B and the nickel plate 430 is provided at the upper end in the second direction B.

In other embodiments, the nickel plate 430 is disposed on the bracket end cap 100 corresponding to the side of the battery information collector 600 near the groove 300. That is to say, nickel sheet 430 and recess 300 all set up the below at battery information collector 600, and reducible pencil 420 is walked the line, practices thrift circuit structure.

In a further embodiment, a plurality of mounting holes 120 are formed in the bracket end cover 100, and one end of each of the plurality of battery cells 200 is fixedly mounted on the bracket end cover 100 through the mounting hole 120. As shown in fig. 3 and 4, the bracket end cover 100 is provided with mounting holes 120 having various shapes, which can be respectively used for corresponding mounting with the water-cooling module, the explosion-proof valve at the end of the single battery, and the pole terminal. The shape of the mounting hole 120 is not limited to a square, a circle, a rectangle, a triangle, or the like.

In a further embodiment, the end of the temperature-sensitive probe 410 is disposed toward the battery cell 200. To make the temperature sensing more accurate.

Referring to fig. 6, a battery module 10a according to a second embodiment of the present invention is provided, in the battery module 10a, the bracket end cover 100 is provided with a plurality of grooves 300 and a plurality of temperature-sensing probes 410 correspondingly disposed in the grooves 300. That is, one groove 300 is provided in the bracket end cap 100 corresponding to each battery cell 200, and a temperature-sensitive probe 410 is provided in the groove 300. Each battery cell 200 monitors the temperature through a corresponding temperature sensing probe 410, so that the temperature monitoring accuracy is higher, and the safety is higher.

The utility model also provides a battery pack, including a plurality of above-mentioned arbitrary embodiments battery module 10. The battery pack temperature monitoring of this application is more accurate, in the use, avoids appearing the situation that temperature probe drops, and the security is higher.

The utility model also provides an electric vehicle, including foretell battery package. Adopt the electric motor car that this application provided, the security of car is higher.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a battery module which characterized in that, battery module includes:

a bracket end cover;

the battery cells are arranged on one side of the bracket end cover;

2. The battery module of claim 1, wherein a surface of the thermally conductive paste in the groove is flush with the bracket end cap around the notch.

3. The battery module according to claim 1, wherein the battery module further comprises:

4. The battery module of claim 3, wherein the temperature collection assembly further comprises a wire harness and a nickel plate, the temperature sensing probe is connected to one end of the wire harness, the nickel plate is connected to the other end of the wire harness, and the temperature sensing probe is connected to the battery information collector through the nickel plate.

5. The battery module of claim 4, wherein the nickel sheet is welded to the battery information collector by a wire.

6. The battery module according to claim 4, wherein a harness hole is formed in the bracket end cover at a position close to the groove, the harness hole is communicated with the groove, and the harness penetrates out of the harness hole.

7. The battery module according to claim 6, wherein the harness hole includes a lead port and a wire outlet port, the lead port communicating with one end of the groove and being provided on a side wall of the groove; the wire outlet is arranged on the surface of the support end cover back to the battery cell.

8. The battery module according to claim 4, wherein the grooves and the nickel plates are provided at both ends of the holder end cap in a second direction, the second direction being a height direction of the battery module.

9. The battery module of claim 4, wherein the nickel plate is disposed on the bracket end cover corresponding to a side of the battery information collector adjacent to the groove.

10. The battery module of claim 1, wherein the bracket end cap is provided with a plurality of mounting holes, and one end of each of the plurality of battery cells is fixedly mounted on the bracket end cap through the mounting hole.

11. The battery module of claim 1, wherein an end of the temperature sensing probe is disposed toward the cell.

12. A battery pack comprising a plurality of battery modules according to any one of claims 1 to 11.

13. An electric vehicle comprising the battery pack of claim 12.