Battery system and equipment

Abstract

The utility model provides a battery system and equipment, and belongs to the technical field of power batteries. The battery system comprises a box body, a plurality of battery modules and a direct cooling plate, wherein the plurality of battery modules are positioned in the box body. The direct cooling plate is positioned below the plurality of battery modules and is used for dissipating heat of the battery modules. Side plate assemblies are arranged on the two sides of the battery module, and the section of each side plate assembly is of an n-shaped structure. The side plate assembly comprises a heater, and the heater is used for heating the battery module. The equipment comprises at least one battery system. Therefore, according to the battery system provided by the invention, the heater is arranged in the side plate assembly, so that the battery system realizes side surface heating, the bottom of the battery system is cooled, and the problems that the battery system has no bottom and top heating feasibility, only side surface heating can be adopted, and the bottom is directly cooled are solved.

Description

Technical Field

[0001] The present application relates to the field of power battery technology, and in particular to a battery system and equipment. Background Art

[0002] With the continuous development of science and technology and the diversification of user needs, new energy power battery technology has also developed rapidly. Among them, the new energy power battery pack is composed of a cluster of battery cell modules. The battery cells can be independent packaged individuals, several battery cells can be assembled to form a battery cell module, and several modules can be assembled to form a module cluster, thereby forming a power battery pack. In addition, a heat dissipation system needs to be installed in the battery pack to cool the battery.

[0003] Currently, setting up a direct cooling heat dissipation system in power batteries is a widely used battery cooling method. Direct cooling heat dissipation has good performance, relatively low production cost, and is relatively convenient to use. The common arrangement method of the heat dissipation solution for the battery pack is to set up a number of pipes on the direct cooling plate, and introduce the refrigerant agent circulation through the connecting pipes to cool the battery pack. In addition, in the design process of the power battery pack, it is also necessary to provide a heating function for the battery cell module. The PTC heater (Positive Temperature Coefficient, PTC) can be used to heat the battery cell. It has the advantages of small thermal resistance and high heat exchange efficiency, and can achieve automatic constant temperature and power saving functions.

[0004] Among them, the PTC heater and the direct cooling plate should be located on different surfaces of the battery pack, so that the PTC heater and the direct cooling plate can heat and dissipate heat for the battery pack respectively. However, in the current power battery system, the battery pack usually has no possibility of bottom and top heating. Therefore, this application solves the problem of the battery pack system that has no bottom and top heating feasibility and can only use side heating and bottom direct cooling, and provides a feasibility of designing a battery pack system with side heating and bottom direct cooling. Utility Model Content

[0005] The present application provides a battery system and equipment, which realizes side heating of the battery system by placing a heater in a side panel assembly, and at the same time satisfies the heat dissipation of the bottom of the battery system, thereby solving the problem of a battery pack system that has no bottom and top heating feasibility and can only use side heating while directly cooling the bottom.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A first aspect of the present application provides a battery system, comprising:

[0008] Box;

[0009] A plurality of battery modules, wherein the plurality of battery modules are located in the box;

[0010] A direct cooling plate is located under a plurality of battery modules and is used to dissipate heat from the battery modules;

[0011] The battery module has side panel components on both sides, and the cross-section of the side panel components is arranged in a "J"-shaped structure;

[0012] The side plate assembly includes a heater, and the heater is used to heat the battery module.

[0013] Based on the above technical solution, the present application can also be improved as follows.

[0014] In a possible implementation, the heater includes: a plurality of heating cores, a ceramic sheet, and a heating harness;

[0015] A plurality of heating cores and a plurality of ceramic sheets are sequentially arranged crosswise in the length direction of the heater;

[0016] The heating harness is located at one end of the heater, and one end of the heating harness is connected to the heating core, and the other end of the heating harness is connected to a connector or a power source.

[0017] In a possible implementation, the side panel assembly further includes: a side panel body and an insulating film;

[0018] The side plate body has a protrusion on one side facing away from the battery module, and a groove for the heater to pass through is provided in the protrusion, and the heater is located in the groove;

[0019] The insulating film is located on a side of the side plate body facing the battery module.

[0020] In a possible implementation, a side of the side plate body facing away from the battery module has a plurality of hanging ears;

[0021] A plurality of lugs are located below the protrusion;

[0022] The mounting ears are used for positioning and installation with the cabinet.

[0023] In a possible implementation, the direct cooling plate includes: a base plate, a flow channel plate, and a joint;

[0024] The lower surface of the substrate is connected to the upper surface of the flow channel plate, and the joint is located at one end of the substrate;

[0025] The flow channel plate is provided with a flow channel groove, a direct cooling channel is formed between the flow channel groove and the base plate, and the refrigerant flows into the direct cooling channel through a joint.

[0026] In a possible implementation, an inlet end and an outlet end are provided on the flow channel plate, and both the inlet end and the outlet end are connected to the direct cooling channel;

[0027] The inlet end and the outlet end are both located on the same side of the flow channel plate, and the inlet end and the outlet end are arranged front and back in the length direction of the flow channel plate.

[0028] In a possible implementation, the flow channel includes a plurality of main flow areas, branch flow areas, and confluence areas;

[0029] Each mainstream area is connected to the inlet end, each branch area is connected to the corresponding mainstream area, each confluence area is connected to the corresponding branch area, and each confluence area is connected to the outlet end.

[0030] In a possible implementation, the battery system further includes: a thermally conductive structural adhesive;

[0031] The battery module and the heater are connected by a thermally conductive structural adhesive;

[0032] The box body and the direct cooling plate are connected by a heat-conducting structural adhesive.

[0033] In a possible implementation, each battery module includes: two end plates and a plurality of battery cell units;

[0034] The plurality of battery core units are arranged in parallel in the thickness direction, and the two end plates are respectively located on both sides of the plurality of battery core units in the thickness direction.

[0035] A second aspect of the present application provides a device comprising at least one of the above-mentioned battery systems.

[0036] The present application provides a battery system and equipment, which includes a box, a plurality of battery modules and a direct cooling plate. Among them, a plurality of battery modules are located in the box. The direct cooling plate is located under the plurality of battery modules, and the direct cooling plate is used to dissipate heat from the battery modules. There are side panel assemblies on both sides of the battery module, and the cross-section of the side panel assembly is arranged in a "J"-shaped structure. The side panel assembly includes a heater, and the heater is used to heat the battery module. The device includes at least one of the above-mentioned battery systems. In this way, the battery system provided by the present application realizes side heating of the battery system by placing the heater in the side panel assembly, and at the same time satisfies the heat dissipation of the bottom of the battery system, thereby solving the problem of a battery pack system that has no bottom and top heating feasibility and can only use side heating and direct cooling of the bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 An exploded schematic diagram of a battery system provided in one embodiment of the present application;

[0039] Figure 2 A partial exploded schematic diagram of a battery system provided in one embodiment of the present application;

[0040] Figure 3 An exploded schematic diagram of a battery module in a battery system provided in one embodiment of the present application;

[0041] Figure 4 A schematic diagram of the structure of a side plate assembly in a battery system provided in an embodiment of the present application;

[0042] Figure 5 An exploded schematic diagram of a side plate assembly in a battery system provided in one embodiment of the present application;

[0043] Figure 6 This is an exploded schematic diagram of a direct cooling plate in a battery system provided in one embodiment of the present application;

[0044] Figure 7 A schematic diagram of the structure of a flow channel plate in a battery system provided in one embodiment of the present application.

[0045] Description of reference numerals:

[0046] 100-Battery system;

[0047] 200-cabinet;

[0048] 210-box cover; 220-frame; 230-bottom guard plate;

[0049] 300-battery module;

[0050] 310-end plate; 320-cell unit; 321-bus bar; 322-pole;

[0051] 400-side panel assembly;

[0052] 410-heater; 411-heating core; 412-ceramic sheet; 413-heating harness; 420-side plate body; 421-protrusion; 422-groove; 430-insulating film; 440-hanging ear;

[0053] 500-direct cooling plate;

[0054] 510-substrate; 520-flow channel plate; 521-flow channel groove; 5211-main flow area; 5212-dividing flow area; 5213-converging flow area; 522-inlet end; 523-outlet end; 530-connector;

[0055] 600-Thermal conductive structural adhesive. DETAILED DESCRIPTION

[0056] As described in the background technology, in the current power battery system, the battery pack usually has no possibility of bottom and top heating. Therefore, the present application solves the problem that the module has no bottom and top heating feasibility and can only use side heating while the bottom is directly cooled. It provides the feasibility of designing a battery pack system with side heating and bottom direct cooling.

[0057] In response to the above technical problems, an embodiment of the present application provides a battery system and equipment, which includes a box, a plurality of battery modules and a direct cooling plate. Among them, a plurality of battery modules are located in the box. The direct cooling plate is located under the plurality of battery modules, and the direct cooling plate is used to dissipate heat from the battery modules. There are side panel assemblies on both sides of the battery module, and the cross-section of the side panel assembly is arranged in a "J"-shaped structure. The side panel assembly includes a heater, and the heater is used to heat the battery module. The device includes at least one of the above-mentioned battery systems. In this way, the battery system provided by the present application realizes side heating of the battery system by placing the heater in the side panel assembly, and at the same time satisfies the heat dissipation of the bottom of the battery system, thereby solving the problem of a battery pack system that has no bottom and top heating feasibility and can only use side heating and direct cooling at the bottom.

[0058] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0059] The embodiment of the present application provides a battery system and equipment, which realizes side heating of the battery system by placing a heater in the side panel assembly, and at the same time satisfies the heat dissipation at the bottom of the battery system, thereby solving the problem of a battery pack system that has no bottom and top heating feasibility and can only use side heating while directly cooling the bottom. The specific structure of the battery system and equipment provided by the embodiment of the present application is introduced below in conjunction with the accompanying drawings.

[0060] refer to Figure 1, the first aspect of the embodiment of the present application provides a battery system 100. Among them, the battery system 100 may include a case 200, a battery module 300 and a direct cooling plate 500. In one possible implementation, the number of battery modules 300 may be several, and the present application does not limit the number of battery modules 300. In an embodiment of the present application, each battery module 300 may be a rectangular structure, and several battery modules 300 may also be a whole rectangular structure. Among them, several battery modules 300 may be located inside the case 200. It can be understood that the case 200 can be used to support each battery module 300. In one possible implementation, the case 200 may be a rectangular structure, and the size of the case 200 may be greater than or equal to the size of several battery modules 300, so that the case 200 can carry several battery modules 300.

[0061] Continue to refer Figure 1 , when the embodiment of the present application is specifically implemented, the box body 200 may include: a box cover 210, a frame 220 and a bottom guard plate 230. Among them, the frame 220 may be located between the box cover 210 and the bottom guard plate 230. In a possible implementation, the box cover 210 may be covered on a plurality of battery modules 300, and the edge of the box cover 210 may be connected to one end of the frame 220. The frame 220 may be located on the outer peripheral side of a plurality of battery modules 300, and the two ends of the frame 220 are respectively connected to the box cover 210 and the bottom guard plate 230. The bottom guard plate 230 may be located under the direct cooling plate 500, and the edge of the bottom guard plate 230 may be connected to the other end of the frame 220. In a possible implementation, the frame 220 may be formed by welding of aluminum profiles, and the box cover 210 and the bottom guard plate 230 may be made of steel. In a possible implementation, the box cover 210 and the frame 220 may be connected by bolts.

[0062] refer to Figure 1 as well as Figure 2 , based on the above embodiment, the direct cooling plate 500 can be located below several battery modules 300. Among them, in a possible implementation, several battery modules 300 can be fixedly connected to the direct cooling plate 500 through a thermally conductive structural adhesive 600, and the thermally conductive structural adhesive 600 can fill the gap between the several battery modules 300 and the direct cooling plate 500. It can be understood that the size of the direct cooling plate 500 can be greater than or equal to the size of several battery modules 300, so that the direct cooling plate 500 can completely cover each battery module 300, and then the direct cooling plate 500 can be used to dissipate heat for each battery module 300.

[0063] refer to Figure 3 , Figure 4 as well as Figure 5On the basis of the above embodiment, each battery module 300 may have a side panel assembly 400 on both sides. Among them, in a possible implementation, the cross-section of the side panel assembly 400 may be arranged in a "J"-shaped structure. In an embodiment of the present application, the side panel assembly 400 may include a heater 410, and the heater 410 can be used to heat the battery module 300. In a possible implementation, the heater 410 may be located in the "J"-shaped structure of the side panel assembly 400, so that the heater 410 can heat the battery module 300 through the side panel assembly 400.

[0064] Continue to refer Figure 5 On the basis of the above embodiment, further, the heater 410 may include: a heating core 411, a ceramic sheet 412 and a heating harness 413. Among them, in a possible implementation, the number of the heating core 411 and the ceramic sheet 412 can be several, and the embodiment of the present application does not limit the number of the heating core 411 and the ceramic sheet 412. In the embodiment of the present application, the number of the heating core 411 and the ceramic sheet 412 can be 5-100. Among them, several heating cores 411 and several ceramic sheets 412 can be arranged in sequence in the length direction of the heater 410. In a possible implementation, each heating core 411 and each ceramic sheet 412 can be arranged alternately and located on the same straight line, so that several heating cores 411 and several ceramic sheets 412 form a whole. In addition, the heating harness 413 can be located at one end of the heater 410, and one end of the heating harness 413 can be connected to the heating core 411, and the other end of the heating harness 413 can be connected to the plug-in or power supply. In this way, when the heating harness 413 is energized, it can be connected to each heating core 411 , so that the entire heater 410 can achieve the heating function of the battery module 300 .

[0065] On the basis of the above embodiments, it should be noted that the heating core 411 is a heating component designed by utilizing the constant temperature heating characteristics of the PTC thermistor for constant temperature heating after power is turned on. Among them, in a possible implementation, the heating power of the heating core 411 is 2-100w, the length of the heating core 411 can be 100-2000mm, the width of the heating core 411 can be 70-200mm, and the height of the heating core 411 can be 5-30mm. Correspondingly, the size of the ceramic sheet 412 can be the same as that of the heating core 411, and the embodiment of the present application does not limit the size of the heating core 411 and the ceramic sheet 412.

[0066] Continue to refer Figure 5On the basis of the above embodiment, further, the side panel assembly 400 may also include: a side panel body 420 and an insulating film 430. In one possible implementation, the side panel body 420 facing away from the battery module 300 may have a protrusion 421, and a groove 422 for the heater 410 to pass through may be provided in the protrusion 421, so that the heater 410 can be located in the groove 422. In this way, the cross section of the side panel body 420 may be a "J"-shaped structure, the heater 410 may enter the protrusion 421 along the groove 422, and the heater 410 may be connected to the side panel body 420 through the thermal conductive structural adhesive 600, so that the heater 410 can heat the battery module 300 through the side panel body 420. In addition, the insulating film 430 may be located on the side of the side panel body 420 facing the battery module 300, so that the insulating film 430 and the heater 410 may be located on both sides of the side panel body 420, respectively. It can be understood that the insulating film 430 can have a certain insulating protection effect.

[0067] On the basis of the above embodiment, in a possible implementation, the side panel body 420 can be made of aluminum. The length of the side panel body 420 can be 100-2000 mm, the width of the side panel body 420 can be 70-200 mm, and the height of the side panel body 420 can be 5-30 mm. The embodiment of the present application does not limit the size of the side panel body 420.

[0068] Continue to refer Figure 5 On the basis of the above embodiment, the side of the side plate body 420 facing away from the battery module 300 may have a lug 440. Among them, in a possible implementation, the number of lugs 440 may be several, and the embodiment of the present application does not limit the number of lugs 440. In the embodiment of the present application, the number of lugs 440 may be 2-10. Among them, several lugs 440 may be located on the same side as the protrusion 421, and several lugs 440 may be located under the protrusion 421. In a possible implementation, the lug 440 may be a triangular structure, and the length dimension of each lug 440 may be 2-100mm, and the height dimension of each lug 440 may be 2-30mm. In the embodiment of the present application, the lug 440 can be used for positioning and installation with the box 200. Among them, one end of the lug 440 is placed on the frame 220, and the side plate assembly 400 is connected to the box 200 by bolts penetrating the lug 440 to achieve the installation function.

[0069] refer to Figure 6On the basis of the above embodiment, the direct cooling plate 500 may further include: a substrate 510, a flow channel plate 520 and a joint 530. In the embodiment of the present application, Figure 1 As shown, the upper surface of the substrate 510 can be connected to the battery module 300 through the thermal conductive structural adhesive 600, and the lower surface of the substrate 510 can be connected to the upper surface of the flow channel plate 520. The joint 530 can be located at one end of the substrate 510, and the end of the joint 530 connected to the substrate 510 can be further connected to the flow channel plate 520. In one possible implementation, a flow channel groove 521 can be provided on the flow channel plate 520, so that a direct cooling channel (not shown in the figure) is formed between the flow channel groove 521 and the substrate 510. It can be understood that the refrigerant can flow into the direct cooling channel through the joint 530, so that the direct cooling plate 500 can dissipate heat from the battery module 300.

[0070] refer to Figure 6 as well as Figure 7 , on the basis of the above embodiment, the flow channel plate 520 may be provided with an inlet end 522 and an outlet end 523, and both the inlet end 522 and the outlet end 523 may be connected to the direct cooling channel. In a possible implementation, the inlet end 522 and the outlet end 523 may be located on the same side of the flow channel plate 520, and the inlet end 522 and the outlet end 523 may be arranged front and back in the length direction of the flow channel plate 520. It can be understood that both the inlet end 522 and the outlet end 523 may be arranged on the side of the direct cooling plate 500 where the joint 530 is provided, and the joint 530 may include a first joint and a second joint (not shown in the figure). Among them, the first joint may be connected to the inlet end 522, and the second joint may be connected to the outlet end 523, so that the refrigerant can enter the inlet end 522 along the first joint, flow through the entire flow channel groove 521, and then flow out of the second joint through the outlet end 523.

[0071] Continue to refer Figure 7On the basis of the above embodiment, further, the flow channel groove 521 may include a mainstream area 5211, a diverter area 5212 and a confluence area 5213. Among them, in a possible implementation, the number of mainstream areas 5211, diverter areas 5212 and confluence areas 5213 can be several, and the embodiment of the present application does not limit the number of mainstream areas 5211, diverter areas 5212 and confluence areas 5213. In the embodiment of the present application, each mainstream area 5211 can be connected to the inlet end 522, each diverter area 5212 is connected to the corresponding mainstream area 5211, each confluence area 5213 is connected to the corresponding diverter area 5212, and each confluence area 5213 is connected to the outlet end 523. In this way, the refrigerant can enter each mainstream area 5211 from the inlet end 522, and then flow along each mainstream area 5211 to each diversion area 5212, and then converge from each diversion area 5212 to each confluence area 5213, and finally flow to the outlet end 523. By setting the flow channel groove 521 as a plurality of areas including the mainstream area 5211, the diversion area 5212 and the confluence area 5213, the refrigerant can be evenly distributed in the flow channel groove 521, thereby achieving better heat dissipation for the battery module 300.

[0072] Continue to refer Figure 1 as well as Figure 2 On the basis of the above embodiment, the battery system 100 may further include: a thermally conductive structural adhesive 600. In one possible implementation, the battery module 300 and the heater 410 may be connected via the thermally conductive structural adhesive 600. In addition, the box 200 and the direct cooling plate 500 may also be connected via the thermally conductive structural adhesive 600. In one possible implementation, the thermally conductive structural adhesive 600 may be a structural adhesive with a thermal conductivity of 0.5-5, which has the functions of heat conduction and bonding and fixing the heater 410.

[0073] Continue to refer Figure 3On the basis of the above embodiment, each battery module 300 may include: an end plate 310 and a battery cell unit 320. Among them, each battery module 300 may have at least one battery cell slot (not shown in the figure) for placing at least one group of battery cell units 320. In the embodiment of the present application, the number of battery cell slots may be the same as the number of battery cell units 320, so that each group of battery cell units 320 can be located in the corresponding battery cell slot. Of course, in some other embodiments, the number of battery cell slots may also be different from the number of battery cell units 320. In a possible implementation, the number of battery cell units 320 and battery cell slots may be several, and the present application does not limit the number of battery cell units 320 and battery cell slots. In addition, in a possible implementation, the number of end plates 310 may be at least two, and the present application does not limit the number of end plates 310. In the embodiment of the present application, the number of end plates 310 is two for example. Among them, in a possible implementation, the end plate 310 may be a plastic end plate 310, and the battery cell unit 320 may be a square structure. The plurality of battery cell units 320 may be arranged in parallel in the thickness direction of the battery cell units 320 , and the two end plates 310 may be respectively located at two sides of the plurality of battery cell units 320 in the thickness direction of the battery cell units 320 .

[0074] Continue to refer Figure 3 On the basis of the above embodiment, each battery cell unit 320 may include: a busbar 321 and a pole 322. In one possible implementation, the number of the busbar 321 and the pole 322 may be at least two, and the present application does not limit the number of the busbar 321 and the pole 322. In the embodiment of the present application, an example is given with the number of the busbar 321 and the pole 322 being two respectively. In the embodiment of the present application, the two poles 322 may be electrically connected to the two busbars 321, respectively. In the embodiment of the present application, the two busbars 321 may be respectively located on both sides of each battery cell unit 320 in the length direction. The two poles 322 may be located on both sides of each battery cell unit 320 on one side facing the box cover 210.

[0075] A second aspect of an embodiment of the present application provides a device (not shown in the figure), which may include at least one of the above-mentioned battery systems 100.

[0076] In the embodiment of the present application, the heater 410 is placed in the side panel assembly 400, so that the battery system 100 can be heated from the side and heat is dissipated from the bottom of the battery system 100 at the same time, thereby solving the problem of the battery pack system having no bottom and top heating feasibility and only side heating and direct cooling of the bottom.

[0077] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0078] It should be noted that the phrases "in specific implementation", "in some embodiments", "in this embodiment", "exemplarily" and the like mentioned in the specification indicate that the described embodiment may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0079] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0080] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0081] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery system, characterized in that: include: Box; A plurality of battery modules, wherein the plurality of battery modules are located in the box; A direct cooling plate, the direct cooling plate is located under the plurality of battery modules and is used to dissipate heat from the battery modules; The battery module has side panel components on both sides, and the cross-section of the side panel components is arranged in a "J"-shaped structure; The side plate assembly includes a heater, and the heater is used to heat the battery module.

2. The battery system according to claim 1, characterized in that: The heater comprises: a plurality of heating cores, ceramic sheets and a heating harness; A plurality of the heating cores and a plurality of the ceramic sheets are sequentially arranged crosswise in the length direction of the heater; The heating harness is located at one end of the heater, one end of the heating harness is connected to the heating core, and the other end of the heating harness is connected to a connector or a power source.

3. The battery system according to claim 2, characterized in that: The side plate assembly further includes: a side plate body and an insulating film; The side plate body has a protrusion on the side facing away from the battery module, the protrusion is provided with a groove for the heater to pass through, and the heater is located in the groove; The insulating film is located on a side of the side plate body facing the battery module.

4. The battery system according to claim 3, characterized in that: The side of the side plate body facing away from the battery module has a plurality of hanging ears; A plurality of the hanging ears are located under the protruding portion; The hanging ears are used for positioning and installing with the box body.

5. The battery system according to claim 4, characterized in that: The direct cooling plate comprises: a base plate, a flow channel plate and a joint; The lower surface of the substrate is connected to the upper surface of the flow channel plate, and the joint is located at one end of the substrate; The flow channel plate is provided with a flow channel groove, and a direct cooling channel is formed between the flow channel groove and the base plate, and the refrigerant flows into the direct cooling channel through the joint.

6. The battery system according to claim 5, characterized in that: The flow channel plate is provided with an inlet end and an outlet end, and both the inlet end and the outlet end are connected to the direct cooling channel; The inlet end and the outlet end are both located on the same side of the flow channel plate, and the inlet end and the outlet end are arranged front and back in the length direction of the flow channel plate.

7. The battery system according to claim 6, characterized in that: The flow channel includes a plurality of main flow areas, branch flow areas and confluence areas; Each of the mainstream areas is connected to the inlet end, each of the branch areas is connected to the corresponding mainstream area, each of the confluence areas is connected to the corresponding branch areas, and each of the confluence areas is connected to the outlet end.

8. The battery system according to claim 7, characterized in that: The battery system further comprises: a thermally conductive structural adhesive; The battery module and the heater are connected via the thermally conductive structural adhesive; The box body and the direct cooling plate are connected via the heat conductive structural adhesive.

9. The battery system according to any one of claims 2 to 8, characterized in that: Each of the battery modules comprises: two end plates and a plurality of battery cell units; The plurality of battery core units are arranged in parallel in the thickness direction, and the two end plates are respectively located on both sides of the plurality of battery core units in the thickness direction.

10. A device, characterized in that: A battery system comprising at least one battery system according to any one of claims 1 to 9.

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