Battery shell and battery

Abstract

The utility model provides a battery shell and a battery, the battery shell comprises a shell, an end plate arranged on the shell, and a heat exchange system arranged on the inner side wall of the end plate, the heat exchange system is connected with an external working fluid supply device through an adapter flow channel in the end plate, and the adapter flow channel is connected with the heat exchange system through an adapter flow channel in the end plate. The heat exchange system comprises heat exchange pipes and heat exchange plates which are arranged at intervals up and down, the heat exchange plates are supported at the bottoms of the battery cell modules, and the heat exchange pipes abut against the tops of busbars of the battery cell modules. According to the battery shell disclosed by the utility model, by arranging the heat exchange tubes and the heat exchange plates, the temperature of the cooling busbar and the bottom of the battery module can be adjusted at the same time, so that a better temperature adjusting effect on the battery module is realized, the use safety of a battery system can be ensured, and meanwhile, the cycle performance of the battery system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery shell. Meanwhile, the utility model also relates to a battery equipped with the battery shell. Background Art

[0002] As one of the important parts of a car, the performance and service life of the battery have a great impact on the performance of the whole vehicle. Existing on-board batteries are usually composed of multiple battery cells arranged in a battery housing. In addition, the on-board space on the vehicle is limited, and the number of batteries required for the vehicle is large. The batteries are closely arranged and connected. The battery pack will generate a certain amount of heat during operation. If it is in a high temperature environment for a long time, it will seriously affect the performance and safety of the battery.

[0003] To solve the above problems, a cooling system is usually provided in the existing battery housing, but there are still problems such as poor battery cooling effect and uneven battery cooling, which cannot effectively improve the cycle performance and safety of the battery. Utility Model Content

[0004] In view of this, the utility model aims to provide a battery housing that can ensure the safety of the battery system and improve the cycle performance of the battery system.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A battery housing, comprising a housing, an end plate arranged on the housing, and a heat exchange system arranged on an inner side wall of the end plate, wherein the heat exchange system is connected to an external working fluid supply device through a transfer flow channel in the end plate;

[0007] The heat exchange system includes heat exchange tubes and heat exchange plates arranged in an upper and lower interval, the heat exchange plates are supported at the bottom of the battery cell module, and the heat exchange tubes are abutted against the top of the busbar of the battery cell module.

[0008] Furthermore, the transfer flow channel includes a liquid inlet flow channel and a liquid outlet flow channel which are staggered in the front-to-back direction;

[0009] The tube inlet of the heat exchange tube and the plate inlet of the heat exchange plate are both connected to the liquid inlet channel, and the tube outlet of the heat exchange tube and the plate outlet of the heat exchange plate are both connected to the liquid outlet channel.

[0010] Furthermore, the heat exchange tubes are arranged to extend along the arrangement direction of the busbars.

[0011] Furthermore, a heat conducting component is provided between the heat exchange tube and the bus bar.

[0012] Furthermore, the heat-conducting component is made of a heat-conducting gasket, or the heat-conducting component is made of a heat-conducting structural adhesive.

[0013] Furthermore, the heat exchange plate includes a first plate and a second plate arranged in sequence along the left-right direction, the first plate and the second plate are connected by a connecting member, and the plate inlet is arranged at an end of the first plate away from the connecting member, and the plate outlet is arranged at an end of the second plate away from the connecting member.

[0014] Furthermore, the end plate includes a plate body, a liquid inlet channel groove and a liquid outlet channel groove provided on the plate body, and a first cover plate and a second cover plate provided on the plate body;

[0015] The liquid outlet channel is formed between the second cover plate and the liquid outlet channel groove, and the liquid inlet channel is formed between the first cover plate and the liquid inlet channel groove.

[0016] Furthermore, a temperature detection unit is provided on the end plate, and the temperature detection unit is used to detect the temperature of the working fluid entering the liquid inlet channel.

[0017] Furthermore, the housing includes a lower housing and an upper housing disposed on the lower housing;

[0018] An opening is provided at one end of the lower shell, and the end plate cover is provided at the opening.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] The battery housing described in the utility model can simultaneously adjust the temperature of the cooling bus and the bottom of the battery module by arranging heat exchange tubes and heat exchange plates, so as to achieve a better temperature regulation effect on the battery module, thereby ensuring the safety of the battery system and improving the cycle performance of the battery system.

[0021] In addition, the end plate can connect the heat exchange tube and the heat exchange plate, and the transfer flow channel in the end plate is staggered in the front-to-back direction, which can reduce the volume of the heat exchange system to increase the space for loading the battery module in the shell. At the same time, the end plate can also be used as a structural member to make the battery shell structure more compact while ensuring the structural strength. In addition, a heat-conducting component is provided between the heat exchange tube and the bus bar to enhance the cooling effect. The connector connects the first plate and the second plate, which is conducive to the circulation of the working fluid to improve the heat exchange efficiency of the heat exchange plate.

[0022] Another object of the present invention is to provide a battery, wherein the battery is provided with the above-mentioned battery housing.

[0023] The battery described in the utility model is provided with the battery housing, which can improve the performance and safety of the battery, thereby helping to improve its own quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of the battery housing according to an embodiment of the utility model;

[0026] Figure 2 An exploded view of a battery housing according to an embodiment of the utility model;

[0027] Figure 3 An exploded view of the end plate and the heat exchange system according to an embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the end plate and the heat exchange system according to an embodiment of the utility model;

[0029] Figure 5 It is a front view of the end plate described in the embodiment of the utility model;

[0030] Figure 6 It is a left side view of the end plate according to the embodiment of the utility model;

[0031] Figure 7 A bottom view of the end plate according to an embodiment of the utility model;

[0032] Figure 8 For the utility model Figure 6 A cross-sectional view at the position indicated by AA;

[0033] Fig. 9 For the utility model Figure 6 A cross-sectional view at the position indicated by BB;

[0034] Description of reference numerals:

[0035] 1. End plate; 2. Heat exchange tube; 3. Heat exchange plate; 4. Liquid inlet channel; 5. Liquid outlet channel; 6. Lower shell; 7. Upper shell;

[0036] 11. Plate body; 12. Liquid inlet channel groove; 13. Liquid outlet channel groove; 14. First cover plate; 15. Second cover plate; 16. Temperature detection unit;

[0037] 21. Pipe inlet joint; 22. Pipe outlet joint;

[0038] 31. First plate; 32. Second plate; 33. Connecting member. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0042] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0043] Embodiment 1

[0044] The battery housing of this embodiment has an overall structure of Figure 1 and Figure 2 As shown, the battery housing of this embodiment includes a housing, an end plate 1 arranged on the housing, and a heat exchange system arranged on the inner wall of the end plate 1. The heat exchange system is connected to an external working fluid supply device through a transfer channel in the end plate 1.

[0045] The heat exchange system includes heat exchange tubes 2 and heat exchange plates 3 arranged in an upper and lower spacing. The heat exchange plates 3 are supported at the bottom of the battery module, and the heat exchange tubes 2 are abutted against the top of the busbar of the battery module.

[0046] As described above, the battery housing of this embodiment can cool the bus and the battery module by providing a heat exchange system to reduce the temperature of the battery module, thereby ensuring the safety of the battery system and improving the cycle performance of the battery system.

[0047] Based on the above overall introduction, specifically, as a preferred implementation form, continue to combine Figure 1 and Figure 2 As shown, the upper part of the end plate 1 of this embodiment is connected to the heat exchange tube 2, and the bottom is connected to the heat exchange plate 3. In specific implementation, the end plate 1 and the shell can be made of metal, plastic and other materials according to actual application conditions, and made by casting, injection molding and other processes to ensure the structural strength of the battery shell.

[0048] At the same time, the working fluid supply device of this embodiment can be set separately, such as an independent fluid storage tank, to supply working fluid to the heat exchange system, or can use related equipment well known to those skilled in the art, such as the fluid storage tank of the engine, to supply working fluid to the heat exchange system. It can be connected to the engine cooling system, and the engine water pump serves as the working fluid supply device to deliver working fluid to the heat exchange system, and the working fluid is the engine coolant.

[0049] As a preferred implementation form, combined with Figure 2 , Figure 3 , Figure 8 , Fig. 9 As shown, the switching flow channel of this embodiment includes a liquid inlet flow channel 4 and a liquid outlet flow channel 5 arranged in a staggered manner along the front and rear sides, the tube inlet of the heat exchange tube 2 and the plate inlet of the heat exchange plate 3 are both connected to the liquid inlet flow channel 4, and the tube outlet of the heat exchange tube 2 and the plate outlet of the heat exchange plate 3 are both connected to the liquid outlet flow channel 5. The switching flow channel is staggered in the end plate 1, so that the end plate 1 can be used as a structural member while conveying working fluid to the heat exchange system, making the structure of the end and the heat exchange system compact, and can save space in the shell to load more battery modules.

[0050] Among them, as a preferred implementation form, the end of this embodiment includes a plate body 11, a liquid inlet channel groove 12 and a liquid outlet channel groove 13 provided on the plate body 11, and a first cover plate 14 and a second cover plate 15 provided on the plate body 11. The liquid outlet channel 5 is formed between the second cover plate 15 and the liquid outlet channel groove 13, and the liquid inlet channel 4 is formed between the first cover plate 14 and the liquid inlet channel groove 12. Compared with the structure of directly processing the transfer channel inside the plate body 11, the transfer channel is formed by the cover plate and the channel groove, which is conducive to the processing and forming of the plate body 11.

[0051] In specific implementation, Figure 3 , Figure 8 , Fig. 9 As shown, the first cover plate 14, the liquid inlet channel groove 12, and the second cover plate 15 are partially enclosed to form the liquid inlet channel 4, and the second cover plate 15 is provided with a portion of the pipe joint side flush with the outer side of the plate body 11, the second cover plate 15 and the liquid outlet channel groove 13 are jointly enclosed to form the liquid outlet channel 5, and the first cover plate 14 is flush with the outer side of the plate body 11. The second cover plate 15 and the plate body 11 are partially provided with a grid structure, which can save manufacturing materials and improve structural strength.

[0052] In addition, combined Figure 4 As shown, the plate body 11 is also provided with a pipe inlet joint 21 and a pipe outlet joint 22, which are respectively connected to the pipe inlet and the pipe outlet of the heat exchange tube 2, so as to facilitate the maintenance of the heat exchange tube 2. The cover plate can be connected to the plate body 11 by bonding, welding, etc., so as to achieve the sealing of the transfer flow channel. At the same time, the outer wall of the end plate 1 is provided with an inlet and outlet pipe group, and the first cover plate 14 and the second cover plate 15 are respectively provided with pipe joints, which are connected to the inlet and outlet pipe groups, and the working fluid supply device can provide working fluid to the transfer flow channel through the inlet and outlet pipe groups.

[0053] In this embodiment, as a preferred implementation form, the heat exchange tube 2 extends along the arrangement direction of the bus bar, which can increase the coverage area of ​​the bus bar and improve the cooling effect. In addition, as a preferred implementation form, a heat conduction component is provided between the heat exchange tube 2 and the bus bar, and the heat conduction component can be made of a heat conduction gasket or a heat conduction structural adhesive to ensure good heat conduction between the heat exchange tube 2 and the bus bar.

[0054] As a preferred implementation form, continue to combine Figure 4 As shown, the heat exchange plate 3 of this embodiment includes a first plate 31 and a second plate 32, the first plate 31 and the second plate 32 are connected by a connecting piece 33, and the plate inlet is arranged at an end of the first plate 31 away from the connecting piece 33, and the plate outlet is arranged at an end of the second plate 32 away from the connecting piece 33, and the connecting piece 33 connects the first plate 31 and the second plate 32, which can be beneficial to the circulation of the working fluid to improve the heat exchange efficiency of the heat exchange plate 3.

[0055] In addition, as a preferred implementation form, a temperature detection unit 16 is provided on the end plate 1 of this embodiment. The temperature detection unit 16 is used to detect the temperature of the working fluid entering the liquid inlet channel 4, and can detect whether the heat exchange system and the working fluid supply device are in a normal working state, so as to ensure the normal operation of the battery system. In specific implementation, the temperature detection unit 16 can be provided on the pipe inlet joint 21 to detect the working fluid temperature at the pipe inlet, or the temperature detection unit 16 can be provided at other positions of the end plate 1, so as to contact the working fluid and measure its temperature.

[0056] In this embodiment, as a preferred implementation form, the housing includes a lower housing 6 and an upper housing 7 arranged on the lower housing 6. One end of the lower housing 6 is provided with an opening, and the end plate 1 is provided at the opening. The end plate 1 can be used as a structural member to cover the housing, making the structure of the battery housing more compact while ensuring the structural strength. In a specific implementation, the upper housing 7 and the end plate are mounted on the lower housing 6 by bolts.

[0057] The battery housing of this embodiment, by providing heat exchange tubes 2 and heat exchange plates 3, can simultaneously regulate the temperature of the cooling bus and the bottom of the battery module to achieve a better temperature regulation effect on the battery module, thereby ensuring the safety of the battery system and improving the cycle performance of the battery system.

[0058] Embodiment 2

[0059] This embodiment relates to a battery, which is equipped with the battery housing in the first embodiment and is used in a start-stop system of an automobile.

[0060] The battery of this embodiment can have better performance and effectively improve its quality by being provided with the battery housing of the first embodiment.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery housing, characterized in that: It comprises a shell, an end plate (1) arranged on the shell, and a heat exchange system arranged on the inner wall of the end plate (1), wherein the heat exchange system is connected to an external working fluid supply device via a transfer flow channel in the end plate (1); The heat exchange system comprises heat exchange tubes (2) and heat exchange plates (3) arranged in an upper and lower spacing, the heat exchange plates (3) being supported at the bottom of the battery cell module, and the heat exchange tubes (2) being abutted against the top of the busbar of the battery cell module.

2. The battery housing according to claim 1, characterized in that: The switching flow channel comprises a liquid inlet flow channel (4) and a liquid outlet flow channel (5) which are staggered in the front-to-back direction; The tube inlet of the heat exchange tube (2) and the plate inlet of the heat exchange plate (3) are both connected to the liquid inlet channel (4), and the tube outlet of the heat exchange tube (2) and the plate outlet of the heat exchange plate (3) are both connected to the liquid outlet channel (5).

3. The battery housing according to claim 2, characterized in that: The heat exchange tubes (2) are arranged to extend along the arrangement direction of the busbars.

4. The battery housing according to claim 3, characterized in that: A heat-conducting component is provided between the heat exchange tube (2) and the busbar.

5. The battery housing according to claim 4, characterized in that: The heat-conducting component is made of a heat-conducting gasket, or the heat-conducting component is made of a heat-conducting structural adhesive.

6. The battery housing according to claim 2, characterized in that: The heat exchange plate (3) comprises a first plate member (31) and a second plate member (32) arranged in sequence along the left-right direction, the first plate member (31) and the second plate member (32) are connected via a connecting member (33), and the plate inlet is arranged at an end of the first plate member (31) away from the connecting member (33), and the plate outlet is arranged at an end of the second plate member (32) away from the connecting member (33).

7. The battery housing according to claim 2, characterized in that: The end plate (1) comprises a plate body (11), a liquid inlet channel groove (12) and a liquid outlet channel groove (13) arranged on the plate body (11), and a first cover plate (14) and a second cover plate (15) arranged on the plate body (11); The liquid outlet channel (5) is formed between the second cover plate (15) and the liquid outlet channel groove (13), and the liquid inlet channel (4) is formed between the first cover plate (14) and the liquid inlet channel groove (12).

8. The battery housing according to claim 2, characterized in that: The end plate (1) is provided with a temperature detection unit (16), and the temperature detection unit (16) is used to detect the temperature of the working fluid entering the liquid inlet channel (4).

9. The battery casing according to any one of claims 1 to 8, characterized in that: The housing comprises a lower housing (6) and an upper housing (7) arranged on the lower housing (6); An opening is provided at one end of the lower shell (6), and the end plate (1) is sealed at the opening.

10. A battery, characterized in that: The battery is provided with the battery case according to any one of claims 1 to 9.

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