Battery

Abstract

The utility model provides a battery. The battery comprises a battery cell module and a cooling assembly, a conducting bar assembly is arranged at the side part of the battery cell module; the cooling assembly comprises a mounting rack arranged on the battery cell module, the mounting rack is arranged corresponding to the conducting bar assembly, a mounting groove is defined by the mounting rack and the side part of the battery cell module, and a cold plate connected with the conducting bar assembly is arranged in the mounting groove. According to the battery disclosed by the utility model, the cooling effect on the battery core, particularly the cooling effect on the pole column area of the battery core, can be improved when the charging rate or the discharging power is relatively high, the acquisition precision of the temperature of the battery core can be ensured, the charging and discharging performance of the battery is further improved, and meanwhile, the battery also has relatively high structural stability; therefore, the overall quality and the market competitiveness of the battery are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a battery. Background Art

[0002] The power of new energy vehicles comes from power batteries. With the development of new energy vehicles, people's requirements for vehicle performance are also increasing. In particular, the reduction of the charging time of power batteries is the most urgent. However, to shorten the battery charging time, it is necessary to solve the problem of large temperature rise of the battery cells during charge and discharge at high rates.

[0003] At present, the cooling of power battery systems mainly includes liquid heat cooling, refrigerant cooling, and air cooling. Among them, liquid cooling is the most widely used and is also one of the more efficient solutions. However, the current liquid cooling solution has a relatively simple structural design. When the charging rate or discharge power is large, the cooling effect is not good, and there are still problems such as too fast temperature rise and too high temperature of the battery cells, especially affecting the temperature acquisition of the battery cells and being unfavorable for the improvement of battery charge and discharge performance. Summary of the Utility Model

[0004] In view of this, the utility model aims to provide a battery to improve the accuracy of battery cell temperature acquisition.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A battery includes a battery cell module and a cooling component;

[0007] A conductive bar assembly is provided on the side of the battery cell module;

[0008] The cooling component includes a mounting frame provided on the battery cell module. The mounting frame is arranged corresponding to the conductive bar assembly, and forms a mounting groove with the side of the battery cell module. A cold plate connected to the conductive bar assembly is provided in the mounting groove.

[0009] Further, the battery cell module includes a plurality of battery cells arranged in sequence along its own length direction. The pole columns and explosion-proof valves at both ends of the length direction of each battery cell are respectively located on both sides of the width direction of the battery cell module. The conductive bar assembly is divided into two groups on the width direction of the battery cell module. Each group of conductive bar assemblies is respectively arranged corresponding to the plurality of pole columns on the same side, and the plurality of battery cells are connected through the conductive bar assembly.

[0010] Further, the conductive bar assembly includes a plurality of conductive sheets. Adjacent two battery cells are connected through the conductive sheets, and each cold plate is connected to the corresponding conductive sheet.

[0011] Further, the cold plate is inserted into the mounting groove.

[0012] Furthermore, the mounting bracket includes a first bracket disposed on the top of the battery cell module, and a second bracket disposed on the side of the battery cell module. The second bracket corresponds to each explosion-proof valve, and the installation groove is formed between the first bracket, the second bracket and the battery cell module.

[0013] Furthermore, the first bracket includes a first substrate disposed on the top of the battery cell module, and a blocking plate disposed at the bottom of the first substrate and on one side of the battery cell module; and / or, the second bracket includes a second substrate disposed on the side of the battery cell module, and a protruding portion protruding upward is provided on the top of the second substrate, and a distance is set between the protruding portion and the battery cell module.

[0014] Furthermore, the second bracket is provided with avoidance holes for avoiding each explosion-proof valve.

[0015] Furthermore, a cavity with two open ends is formed among the cold plate, the battery cell module, the first bracket and the second bracket; the battery cell module is provided with a sealing plate for blocking each opening, and / or, the cavity is filled with a heat-conducting adhesive or a phase-change material.

[0016] Furthermore, an insulating layer is provided on the side of the cold plate facing the conductive sheet.

[0017] Furthermore, a plurality of flow channels are arranged in the cold plate in sequence along the height direction of the battery cell module, and a liquid inlet joint and a liquid outlet joint are provided on the cold plate. One end of each flow channel is connected to the liquid inlet joint, and the other end of each flow channel is connected to the liquid outlet joint.

[0018] Compared with the prior art, the present utility model has the following advantages:

[0019] For the battery of the present utility model, the conductive bar assembly can be directly cooled by the cold plate to improve the cooling effect on the battery cells when the charging rate or the discharge power is relatively large, especially the cooling effect on the battery cell pole region, which can avoid affecting the acquisition accuracy of the battery cell temperature, so as to facilitate the improvement of the charge and discharge performance of the battery. At the same time, the setting of the mounting bracket is also conducive to the arrangement of the cold plate and improves the installation stability of the cold plate, thereby facilitating the improvement of the overall quality of the battery.

[0020] In addition, the cold plate is inserted into the installation groove, which is convenient for disassembly and assembly of the cold plate. The first bracket includes a first substrate and a blocking plate, which can form an L-shaped structure, which is beneficial to improving the structural strength. The second substrate is provided with a protruding portion, and a distance is set between the protruding portion and the battery cell module, which is beneficial to cooperate with the first bracket to form an installation groove. The setting of the avoidance holes can make the second bracket fit the side of the battery cell module, which is beneficial to improving the compactness.

[0021] In addition, setting a sealing plate helps improve the sealing performance of the battery. The cavity is filled with thermal conductive glue or phase change material, which is conducive to heat exchange between the battery cell module and the cold plate. Through the setting of the insulating layer, it is conducive to ensuring the installation and use of the battery. Setting a plurality of flow channels is conducive to improving the heat exchange efficiency of the cold plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0023] Figure 1 is a schematic diagram of the overall structure of the battery according to an embodiment of the present utility model;

[0024] Figures 2 to 4 is Figure 1 a schematic diagram of the structure shown in

[0025] Figure 5 is Figure 2 a sectional view taken along the line A-A in

[0026] Figure 6 is Figure 5 an enlarged view of part B in

[0027] Figure 7 is a schematic diagram of the structure of the sealing plate according to an embodiment of the present utility model;

[0028] Figure 8 is a schematic diagram of the structure of the second bracket according to an embodiment of the present utility model;

[0029] Figure 9 is a schematic diagram of the structure of the first bracket according to an embodiment of the present utility model;

[0030] Figure 10 is a schematic diagram of the structure of the cold plate according to an embodiment of the present utility model;

[0031] DESCRIPTION OF THE REFERENCE NUMERALS:

[0032] 1. Battery cell module; 10. Battery cell; 11. Terminal; 12. Conductive sheet; 13. Mounting rack; 131. First bracket; 1311. First substrate; 1312. Blocking plate; 132. Second bracket; 1321. Second substrate; 1322. Protrusion; 1323. Avoidance hole; 14. Cavity; 15. Sealing plate; 16. Cold plate; 161. Flow channel; 162. Liquid inlet joint; 163. Liquid outlet joint. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0034] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model 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 thus cannot be construed as a limitation to the present utility model. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", "connecting piece" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0036] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0037] This embodiment relates to a battery, which can directly cool the position of the electrode post 11 of the battery cell 10, ensure the accuracy of the temperature acquisition of the battery cell 10, and is beneficial to improving the charge and discharge performance of the battery.

[0038] In terms of the overall structure, as Figures 1 to 10 shown, the battery of this embodiment includes a battery cell module 1 and a cooling component. Among them, a conductive bar assembly is provided on the side of the battery cell module 1. The cooling component includes a mounting bracket 13 provided on the battery cell module 1. The mounting bracket 13 is arranged corresponding to the conductive bar assembly, and forms a mounting groove with the side of the battery cell module 1, and a cold plate 16 connected to the conductive bar assembly is provided in the mounting groove.

[0039] At this time, with the above settings, the conductive bar assembly can be directly cooled by the cold plate 16 to improve the cooling effect on the battery cell 10 when the charging rate or discharge power is large, especially the cooling effect on the area of the electrode post 11 of the battery cell 10, which can avoid affecting the accuracy of the temperature acquisition of the battery cell 10, is beneficial to improving the charge and discharge performance of the battery. At the same time, the setting of the mounting bracket 13 is also beneficial to the arrangement of the cold plate 16 and improves the mounting stability of the cold plate 16, thereby being beneficial to improving the overall quality of the battery.

[0040] It should be noted that Figure 1The length direction shown in the figure is the length direction of the battery cell module 1, the width direction is the width direction of the battery cell module 1, and the height direction is the height direction of the battery cell module 1. For the relevant structural parts not mentioned in the battery of this embodiment, reference can be made to the structures in the battery products well-known to those skilled in the art, and no further elaboration will be made here.

[0041] Specifically, in this embodiment, as a preferred implementation form, refer to Figures 1 to 6 As shown, the battery cell module 1 includes a plurality of battery cells 10 arranged in sequence along its own length direction, and the pole columns 11 and explosion-proof valves at both ends of the length direction of each battery cell 10 are respectively located on both sides of the width direction of the battery cell module 1.

[0042] Moreover, the conductive busbar assembly is divided into two groups on the width direction of the battery cell module 1. Each group of conductive busbar assemblies is respectively arranged corresponding to the plurality of pole columns 11 on the same side, and the plurality of battery cells 10 are connected through the conductive busbar assembly. That is to say, there are two sets of the cold plate 16 and the mounting bracket 13 in this embodiment, which respectively correspond to the conductive busbar assemblies on both sides of the width direction of the battery cell module 1 to achieve the cooling of the positions of the pole columns 11 at both ends of the battery cell 10.

[0043] Secondly, in this embodiment, as a preferred setting form, the conductive busbar assembly includes a plurality of conductive sheets 12. Adjacent two battery cells 10 are connected through the conductive sheet 12, and each cold plate 16 is connected to the corresponding conductive sheet 12. Specifically, the conductive sheet 12 can be a palladium sheet or an aluminum sheet well-known to those skilled in the art.

[0044] In addition, in this embodiment, as a preferred implementation form, the cold plate 16 is inserted into the installation groove, which is convenient for the disassembly and assembly of the cold plate 16, and thus is beneficial to improving the convenience of battery maintenance and replacement.

[0045] To expand, in this embodiment, as a preferred implementation form, refer to Figure 5 and Figure 6 As shown, the mounting bracket 13 includes a first bracket 131 arranged on the top of the battery cell module 1 and a second bracket 132 arranged on the side of the battery cell module 1. The second bracket 132 is arranged corresponding to each explosion-proof valve, and the installation groove is formed between the first bracket 131, the second bracket 132 and the battery cell module 1.

[0046] During specific implementation, in this embodiment, as a preferred implementation form, refer to Figure 9 As shown in the figure, the first bracket 131 includes a first substrate 1311 arranged on the top of the battery cell module 1 and a blocking plate 1312 arranged at the bottom of the first substrate 1311 and located on one side of the battery cell module 1, so that the first bracket 131 with an L-shaped structure can be formed, which is beneficial to improving the structural strength of the first bracket 131.

[0047] At the same time, as a preferred implementation form, refer toFigure 6 and Figure 8 As shown in Figure 8 , the second bracket 132 includes a second substrate 1321 provided on the side of the battery cell module 1. A protruding portion 1322 protruding upward is provided on the top of the second substrate 1321, and a gap is provided between the protruding portion 1322 and the battery cell module 1. In this way, it is beneficial for the second bracket 132 and the first bracket 131 to cooperate to form a mounting groove.

[0048] Furthermore, both the first substrate 1311 and the second substrate 1321 are preferably adhesively connected to the battery cell module 1. Specifically, in implementation, each substrate can be connected to the battery cell module 1 through double-sided tape well-known to those skilled in the art, and the outer surface of the protruding portion 1322 and the outer surface of the blocking plate 1312 are preferably flush.

[0049] In this embodiment, as a preferred implementation form, continue to refer to Figure 8 As shown, the second bracket 132 is provided with avoidance holes 1323 for avoiding each explosion-proof valve. The main advantage of such a setting is that the second bracket 132 can be attached to the side of the battery cell module 1, which is beneficial to improving the compactness.

[0050] Secondly, in this embodiment, as a preferred implementation form, in combination with Figure 6 and Figure 7 As shown, a cavity 14 with both ends open is formed among the cold plate 16, the battery cell module 1, the first bracket 131 and the second bracket 132. And, a sealing plate 15 for blocking each opening is provided on the battery cell module 1, which helps to improve the sealing performance of the battery.

[0051] At the same time, as a preferred implementation form, the cavity 14 in this embodiment is filled with a thermal conductive adhesive or a phase change material to facilitate heat exchange between the battery cell module 1 and the cold plate 16. And in the specific structure, the above-mentioned sealing plate 15 can ensure the smooth filling of the thermal conductive adhesive or the phase change material.

[0052] Of course, the thermal conductive adhesive here can adopt the thermal conductive structural adhesive well-known to those skilled in the art to have good thermal conductivity and bonding performance. The phase change material can also adopt related products well-known to those skilled in the art, such as paraffin. The sealing plate 15 can adopt an epoxy board to have good insulation performance, high temperature resistance and strong adhesion, etc.

[0053] In addition, in this embodiment, as a preferred implementation form, an insulating layer is provided on the side of the cold plate 16 facing the conductive sheet 12 to facilitate ensuring the use and installation of the battery. The insulating layer can be an insulating coating sprayed with an insulating paint well-known to those skilled in the art, or a common insulating film. Specifically, the thickness of the insulating layer is preferably set between 0.1 - 0.2 mm, such as 0.1 mm, 0.15 mm, or 0.2 mm, etc., so as to ensure that the cold plate 16 has sufficient insulating effect while avoiding material waste and excessive thickness of the cold plate 16.

[0054] Moreover, in this embodiment, as a preferred implementation form, in combination Figure 6 with Figure 10 as shown, a plurality of flow channels 161 are arranged in the cold plate 16 in sequence along the height direction of the battery cell module 1, and a liquid inlet joint 162 and a liquid outlet joint 163 are provided on the cold plate 16. One end of each flow channel 161 is connected to the liquid inlet joint 162, and the other end of each flow channel 161 is connected to the liquid outlet joint 163.

[0055] Setting a plurality of flow channels 161 is conducive to improving the heat exchange efficiency of the cold plate 16. Moreover, the number of flow channels 161 can be set and adjusted according to actual cooling requirements. For example, the specific number can be five, six, or seven arranged in sequence along the height direction of the battery cell module 1. At the same time, the cold plate 16 can be supported by profiles to have sufficient structural strength.

[0056] For the battery of this embodiment, the conductive busbar assembly can be directly cooled by the cold plate 16 to improve the cooling effect on the battery cell 10 when the charging rate or discharge power is large, especially the cooling effect on the pole column 11 area of the battery cell 10, which can avoid affecting the acquisition accuracy of the temperature of the battery cell 10, so as to facilitate the improvement of the charge and discharge performance of the battery and meet the high-rate charge and discharge requirements. At the same time, the setting of the mounting frame 13 is also conducive to the arrangement of the cold plate 16 and improves the mounting stability of the cold plate 16, thereby facilitating the improvement of the overall quality of the battery.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A battery, characterized in that: it includes a battery cell module and a cooling component; a conductive busbar component is provided on the side of the battery cell module; the cooling component includes a mounting frame provided on the battery cell module, the mounting frame is arranged corresponding to the conductive busbar component, and forms a mounting groove with the side of the battery cell module, and a cold plate connected to the conductive busbar component is provided in the mounting groove.

2. The battery according to claim 1, characterized in that: the battery cell module includes a plurality of battery cells arranged in sequence along its own length direction, and the pole columns and explosion-proof valves at both ends of the length direction of each battery cell are respectively located on both sides of the width direction of the battery cell module; the conductive busbar component is divided into two groups on the width direction of the battery cell module, and each group of conductive busbar components is respectively arranged corresponding to a plurality of the pole columns on the same side, and the plurality of battery cells are connected through the conductive busbar component.

3. The battery according to claim 2, characterized in that: the conductive busbar component includes a plurality of conductive sheets, adjacent two battery cells are connected through the conductive sheets, and each cold plate is connected to the corresponding conductive sheet.

4. The battery according to claim 2, characterized in that: the cold plate is inserted and arranged in the mounting groove.

5. The battery according to claim 4, characterized in that: the mounting frame includes a first bracket provided on the top of the battery cell module and a second bracket provided on the side of the battery cell module, the second bracket is arranged corresponding to each explosion-proof valve, and the mounting groove is formed between the first bracket, the second bracket and the battery cell module.

6. The battery according to claim 5, characterized in that: the first bracket includes a first substrate provided on the top of the battery cell module and a blocking plate located on one side of the battery cell module provided at the bottom of the first substrate; and / or, the second bracket includes a second substrate provided on the side of the battery cell module, and a protruding portion protruding upward is provided on the top of the second substrate, and a distance is provided between the protruding portion and the battery cell module.

7. The battery according to claim 5, characterized in that: the second bracket is provided with avoidance holes for avoiding each explosion-proof valve.

8. The battery according to claim 5, characterized in that: a cavity with two open ends is formed among the cold plate, the battery cell module, the first bracket and the second bracket; the battery cell module is provided with a sealing plate for blocking each opening, and / or, the cavity is filled with a thermal conductive adhesive or a phase change material.

9. The battery according to claim 3, characterized in that: an insulating layer is provided on the side of the cold plate facing the conductive sheet.

10. The battery according to any one of claims 1 to 9, characterized in that: a plurality of flow channels arranged in sequence along the height direction of the battery cell module are provided in the cold plate, and a liquid inlet joint and a liquid outlet joint are provided on the cold plate, one end of each flow channel is connected to the liquid inlet joint, and the other end of each flow channel is connected to the liquid outlet joint.

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