Soft package battery and battery pack

Abstract

The utility model discloses a soft package battery and a battery pack, and the soft package battery comprises a shell which comprises a body part and a packaging part; the battery cell comprises an electrode assembly, a positive electrode lug and a negative electrode lug, the electrode assembly is arranged in the body part, the positive electrode lug and the negative electrode lug are connected with the electrode assembly, the positive electrode lug and the negative electrode lug are located on the same side of the electrode assembly in the third direction, and the positive electrode lug and the negative electrode lug penetrate through the packaging part in the third direction and extend out of the packaging part; and the acquisition board is arranged at the packaging part, the acquisition board is provided with an acquisition module and a wireless transmitting module, the acquisition module is electrically connected with the positive tab and the negative tab, and the wireless transmitting module is electrically connected with the acquisition module. The data information of the battery cell is acquired through the acquisition module, and the acquired data information is transmitted to the external equipment through the wireless transmitting module, so that powerful data support is provided for state evaluation, fault diagnosis and predictive maintenance of the battery cell, cable arrangement is omitted, the structure is simplified, the weight is reduced, and the occupied space is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to power battery technical field especially relates to a soft package battery and battery package. BACKGROUND

[0002] Soft package battery becomes the battery core variety that the car enterprise chooses less because of its electric core volume small, group efficiency low, manufacture difficulty big. However, with the progress of science and technology, soft package group difficulty has the latest progress, and soft package battery is through the mode of no module in the battery package, and the proportion is greatly promoted, and the group efficiency is greatly improved, and gradually widely used in the electric automobile industry.

[0003] With the rapid development of electric automobile industry, battery management system (Battery Management System, BMS) as the core component of power battery, bears the key task of ensuring battery safety, prolonging battery life, optimizing battery performance. The existing battery package usually adopts wired BMS, and the cable is arranged between the soft package battery and the soft package battery, and between the soft package battery and the control device, and the information is collected and transmitted through the cable, and the wiring is complex and heavy, and occupies space. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a kind of soft package battery, to solve the technical problem that current soft package battery adopts wired BMS, wiring is complex and heavy, and occupies space.

[0005] To achieve the above object, the utility model provides a kind of soft package battery, with the first direction and the third direction that intersect each other, the soft package battery includes:

[0006] Shell, the shell includes body part and encapsulation part, the encapsulation part is connected with the body part in the third direction;

[0007] Electric core, the electric core includes electrode assembly, positive pole lug and negative pole lug, the electrode assembly is arranged in the body part, the positive pole lug and the negative pole lug are connected with the electrode assembly, and the positive pole lug and the negative pole lug are located on the same side of the electrode assembly in the third direction, and the positive pole lug and the negative pole lug are arranged in the encapsulation part and extended to the outside of the encapsulation part in the third direction;

[0008] Collection board, the collection board is arranged in the encapsulation part, the collection board has collection module and wireless transmitting module, the collection module is electrically connected with the positive pole lug and the negative pole lug, and the wireless transmitting module is electrically connected with the collection module.

[0009] In some embodiments, the positive pole lug and the negative pole lug are arranged at intervals in the first direction, and the collection board is located between the positive pole lug and the negative pole lug in the first direction.

[0010] In some embodiments, the collecting plate is arranged on the outer surface of the packaging part.

[0011] The collecting plate further comprises a first lead wire and a second lead wire, the first lead wire is electrically connected with the positive tab and the collecting module, and the second lead wire is electrically connected with the negative tab and the collecting module.

[0012] In some embodiments, the collecting plate is adhered to the outer surface of the packaging part.

[0013] Part of the first lead wire is adhered to the outer surface of the packaging part, and the first lead wire is electrically connected with the positive tab extending out of the shell.

[0014] Part of the second lead wire is adhered to the outer surface of the packaging part, and the second lead wire is electrically connected with the negative tab extending out of the shell.

[0015] In some embodiments, the collecting plate is arranged in the packaging part.

[0016] The collecting plate further comprises a first lead wire and a second lead wire, the first lead wire is electrically connected with the positive tab and the collecting module, and the second lead wire is electrically connected with the negative tab and the collecting module.

[0017] In some embodiments, the collecting plate further comprises a third lead wire electrically connected with the collecting module, one of the positive tab and the negative tab is arranged with the collecting plate and electrically connected with the collecting module, and the other is electrically connected with the third lead wire.

[0018] In some embodiments, the collecting module comprises a first collecting unit, a second collecting unit and a fourth lead wire, the first collecting unit is arranged on and electrically connected with the positive tab, the second collecting unit is arranged on and electrically connected with the negative tab, and the fourth lead wire is electrically connected with the first collecting unit and the second collecting unit.

[0019] In some embodiments, the positive tab and the negative tab are both provided with an insulating layer, and the insulating layer covers the collecting module.

[0020] In some embodiments, at least part of the insulating layer is located outside the shell, and / or the collecting module further comprises a temperature collecting unit.

[0021] The utility model further provides a battery pack, the battery pack comprises the soft package battery as aforementioned.

[0022] The utility model discloses a soft package battery, and the acquisition board collects the data information (such as voltage, current etc.) of the electric core through the acquisition module, and transmits the collected data information to external equipment through the wireless transmitting module, can provide powerful data support for the state evaluation, fault diagnosis and predictive maintenance of the soft package battery, omits the setting of wired cable, realizes the structure simplification, reduces the weight, reduces the occupied space, improves energy density. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the structural schematic diagram of soft package battery in an embodiment of the utility model;

[0024] Figure 2 It is the structural schematic diagram of soft package battery in another embodiment of the utility model;

[0025] Figure 3 It is the structural schematic diagram of soft package battery in still another embodiment of the utility model;

[0026] Figure 4 It is the structural schematic diagram of soft package battery in still another embodiment of the utility model. DETAILED DESCRIPTION

[0027] The scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments in the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0028] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0029] It should also be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or can have a middle element simultaneously. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or can have a middle element simultaneously.

[0030] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of a soft-pack battery in one embodiment of the present invention:

[0032] This utility model embodiment proposes a soft-pack battery, such as Figure 1 As shown, the pouch cell has a first direction X and a third direction Z that intersect each other in pairs. The pouch cell includes:

[0033] The housing 110 includes a body part and an encapsulation part 111, the encapsulation part 111 being connected to the body part in the third direction Z.

[0034] The battery cell 120 includes an electrode assembly 121, a positive electrode tab 122, and a negative electrode tab 123. The electrode assembly 121 is disposed inside the encapsulation portion 111. The positive electrode tab 122 and the negative electrode tab 123 are both connected to the electrode assembly 121. The positive electrode tab 122 and the negative electrode tab 123 are located on the same side of the electrode assembly 121 in the third direction Z. The positive electrode tab 122 and the negative electrode tab 123 are both disposed in the encapsulation portion 111 in the third direction Z and extend to the outside of the encapsulation portion 111.

[0035] The acquisition board 130 is located in the packaging section 111. The acquisition board 130 has an acquisition module 131 and a wireless transmission module 132. The acquisition module 131 is electrically connected to the positive tab 122 and the negative tab 123. The wireless transmission module 132 is electrically connected to the acquisition module 131.

[0036] As the basic unit of a battery pack, a pouch battery is a type of battery that encapsulates battery components such as positive and negative electrode materials, separators, and electrolytes within a flexible packaging material (such as aluminum-plastic film). Visually, pouch batteries are flat and, due to their flexibility, possess a certain degree of deformability. They can also be customized to meet the specific needs of different devices, resulting in various shapes and sizes to fully utilize the internal space of the equipment.

[0037] like Figure 1As shown, the soft package battery has a first direction X and a third direction Z, the first direction X is arranged perpendicularly to the third direction Z, the first direction X can be the length direction of the soft package battery, and the third direction Z can be the height direction of the soft package battery. In addition, the soft package battery can also have a second direction Y, the second direction Y is perpendicular to the first direction X and the third direction Z, and the second direction Y can be the width direction / thickness direction of the soft package battery.

[0038] The shell 110 is a key packaging material of the soft package battery, and can be an aluminum plastic film, which is generally a multi-layer composite material, has good barrier property, can prevent external moisture, oxygen and the like from entering the inside of the battery, and can also prevent electrolyte leakage. The shell 110 includes a body portion and a packaging portion 111 connected to the body portion in the third direction Z, the electrode assembly 121 of the battery cell 120 is accommodated in the body portion, and the packaging portion 111 and the electrode assembly 121 are arranged adjacent to each other in the third direction Z. The electrode assembly 121 can be a winding structure formed by mutually laminating and winding a positive plate, a separator and a negative plate, and the separator is located between the positive plate and the negative plate, which mainly prevents the positive and negative electrodes from directly contacting to cause short circuit, and allows ions to pass freely between the positive and negative electrodes. In the third direction Z of the soft package battery, the positive tab 122 and the negative tab 123 are located on the same side of the electrode assembly 121, and the positive tab 122 corresponds to the positive plate of the electrode assembly 121 and is connected by welding or integral setting, and the negative tab 123 corresponds to the negative plate of the electrode assembly 121 and is connected by welding or integral setting. The shell 110 also contains electrolyte, which serves as an ion transmission medium to ensure the conduction of ions inside the battery.

[0039] The collection module 131 of the collection board 130 is used to collect data information such as voltage, current and the like of the battery cell 120, and after the collection module 131 collects the data information of the battery cell 120, the wireless transmission module 132 can send it to an external device. The collection board 130 can be a circuit board, which has corresponding circuits to transmit and process the collected data information. The collection module 131 can include components for collecting current and / or voltage information of the battery cell 120 to monitor the working state of the battery cell 120. In addition, the collection module 131 can also include other collection devices, such as temperature collection devices, pressure collection devices and the like, for collecting temperature information, pressure information and the like of the battery cell 120. The collection board 130 can be arranged outside the shell or inside the shell 110, including but not limited to this, and the arrangement position of the collection board 130 is not limited in the embodiment.

[0040] The utility model discloses soft package battery, and the acquisition board 130 passes through the acquisition module 131 and gathers the data information (such as voltage, temperature, pressure etc.) of the electric core 120, and through wireless transmitting module 132, the data information that gathers is transmitted to external device, can provide powerful data support for the state evaluation, fault diagnosis and predictive maintenance of soft package battery, spares the setting of cable, realizes the structure simplification, has relieved the weight, has reduced the occupied space.

[0041] In some embodiments, as shown in Figure 1 The positive and negative tabs 122 and 123 are spaced apart in the first direction X, and the acquisition board 130 is located between the positive and negative tabs 122 and 123 in the first direction X.

[0042] During the assembly of the soft package battery, after the electrode assembly 121 of the electric core 120 is placed in the shell 110, the electrode assembly 121 is encapsulated by the encapsulation part 111, and the positive and negative tabs 122 and 123 are arranged through the encapsulation part 111 and extend out of the shell 110. As shown in Figure 1 The encapsulation part 111 is a part for sealing the shell 110 after the electrode assembly 121 is placed therein, and is arranged adjacent to the electrode assembly 121 in the third direction Z, and will not be described again.

[0043] Since the encapsulation part 111 seals the shell 110, the area of the shell 110 corresponding to the electrode assembly 121 is thinner in the thickness direction. By arranging the acquisition board 130 in the encapsulation part 111, the size of the soft package battery in the thickness direction can be increased without increasing the size of the soft package battery in the thickness direction, thereby saving space.

[0044] The encapsulation part 111 is located at the edge of the shell 110, which is a key part for encapsulating and sealing the internal components of the battery, ensuring that the electrolyte does not leak and the external environment does not adversely affect the internal components of the battery.

[0045] In the third direction Z of the soft package battery, one end of the positive tab 122 is inside the shell 110 and electrically connected to the electrode assembly 121, and the other end of the positive tab 122 extends out of the shell 110 through the encapsulation part 111 of the shell 110. One end of the negative tab 123 is inside the shell 110 and electrically connected to the electrode assembly 121, and the other end of the negative tab 123 extends out of the shell 110 through the encapsulation part 111 of the shell 110. During the process of the positive and negative tabs passing through the encapsulation part 111, the sealing property of the encapsulation part 111 is ensured not to be damaged by a special encapsulation process, for example, a sealing glue is tightly attached to the material of the encapsulation part 111 to prevent electrolyte leakage. The positive and negative tabs serve as a bridge between the internal electrodes of the battery and the external circuit, and can be connected to the external wires or circuit boards through welding or other methods, thereby realizing the charging and discharging function of the battery.

[0046] The collection plate 130 is mounted at the packaging portion 111 without interfering with the electrode assembly 123, and the structure is compact. In the first direction X of the soft package battery, the collection plate 130 is located between the positive and negative tabs 122 and 123, and the distance between the collection plate 130 and the tabs is closer, so that a shorter connection line can be used for electrical connection. In the design of a compact soft package battery, short-distance connection can reduce electromagnetic interference and signal attenuation, so that the signal transmission is more stable and accurate, which is beneficial to the accurate monitoring and control of the battery state by the battery management system. In this embodiment, by reasonably arranging the installation positions of the positive and negative tabs 122 and 123 and the collection plate 130, the space of the packaging portion 111 is fully utilized to mount the collection plate 130, so that the soft package battery can accommodate more active materials in a limited volume, thereby improving the energy density of the battery and facilitating the application of the soft package battery in application scenarios with high space requirements.

[0047] The collection plate 130 can be arranged on the outer surface of the packaging portion 111, or on the inner side of the packaging portion 111, for example:

[0048] In some embodiments, as shown in Figure 1 The collection plate 130 is arranged on the outer surface of the packaging portion 111. The collection plate 130 also has a first lead wire 133 and a second lead wire 134. The first lead wire 133 is electrically connected to the positive tab 122 and the collection module 131. The second lead wire 134 is electrically connected to the negative tab 123 and the collection module 131.

[0049] The collection plate 130 is arranged on the outer surface of the packaging portion 111. When the collection plate 130 fails / abnormal, maintenance personnel can directly contact the collection plate 130, which facilitates detection, maintenance and replacement of the collection plate 130. In addition, the collection plate 130 can better exchange heat with the external environment during operation, thereby improving the stability and reliability of the operation. In addition, the collection plate 130 is provided with the first lead wire 133 and the second lead wire 134. The collection module 131 of the collection plate 130 is electrically connected to the positive tab 122 through the first lead wire 133, so as to correspondingly collect the current and / or voltage information of the positive terminal. The collection module 131 is electrically connected to the negative tab 123 through the second lead wire 134, so as to correspondingly collect the current and / or voltage information of the negative terminal. In this way, the current and / or voltage data of the battery cell 120 can be accurately monitored. If the voltage of the battery cell 120 is too high or too low, the battery management system can cut off the charging or discharging circuit to prevent overcharging or overdischarging of the battery cell 120, thereby avoiding safety accidents such as thermal runaway, burning and explosion of the battery.

[0050] In some embodiments, as shown in Figure 1As shown, the collection plate 130 is bonded to the outer surface of the packaging portion 111; a portion of the first lead wire 133 is bonded to the outer surface of the packaging portion 111, and the first lead wire 133 is electrically connected to the positive electrode lug 122 extending out of the shell 110; a portion of the second lead wire 134 is bonded to the outer surface of the packaging portion 111, and the second lead wire 134 is electrically connected to the negative electrode lug 123 extending out of the shell 110.

[0051] Specifically, the collection plate 130 is fixed to the outer surface of the packaging portion 111 by bonding, which is convenient for assembly and stable for installation. Moreover, the first lead wire 133 and the second lead wire 134 are fixed by being bonded to the packaging portion 111, which improves the stability of the lead wires and ensures the stability of signal transmission. Before the collection plate 130 and the lead wires are bonded, the outer surface of the packaging portion 111 can be cleaned to remove impurities such as oil stains and dust, and the surface micro-roughness can be increased by using plasma cleaning technology to improve the adhesion of the adhesive. The adhesive can be a high-temperature-resistant, high-insulation, high-strength adhesive with good flexibility, such as a silicone adhesive. After curing, it can withstand the temperature range of the soft-pack battery during operation (generally -20℃ to 80℃, and -40℃ to 120℃ in extreme conditions), effectively isolates water vapor and dust, prevents short circuit of the circuit of the collection plate 130, and has good flexibility to adapt to slight deformation of the soft-pack battery under the action of charge-discharge cycles and external stress.

[0052] Referring to Figure 2 , Figure 2 is a structural schematic view of a soft-pack battery in another embodiment of the present application.

[0053] In some other embodiments, as shown in Figure 2 , the collection plate 130 is arranged in the packaging portion 111; the collection plate 130 further has a first lead wire 133 and a second lead wire 134, the first lead wire 133 is electrically connected to the positive electrode lug 122 and the collection module 131, and the second lead wire 134 is electrically connected to the negative electrode lug 123 and the collection module 131.

[0054] The internal environment of the soft-pack battery is relatively stable, and the collection plate 130 is arranged in the packaging portion 111, which can be protected from external physical impact, dust, and moisture, thereby prolonging the service life. Moreover, the collection plate 130 is provided with the first lead wire 133 and the second lead wire 134, the collection module 131 of the collection plate 130 is electrically connected to the positive electrode lug 122 through the first lead wire 133, can correspondingly collect the current and / or voltage information of the positive electrode terminal, and is electrically connected to the negative electrode lug 123 through the second lead wire 134, can correspondingly collect the current and / or voltage information of the negative electrode terminal, thereby realizing accurate monitoring of the current and / or voltage state of the battery. If the voltage of the battery cell 120 is too high or too low, the battery management system can cut off the charging or discharging circuit to prevent overcharging or overdischarging of the battery cell 120, thereby avoiding safety accidents such as thermal runaway, combustion, explosion, etc.

[0055] Referring to Figure 3 , Figure 3 is a structural schematic diagram of a soft package battery in another embodiment of the present application:

[0056] In some embodiments, as shown in Figure 3 , the collection plate 130 further has a third wire 135 electrically connected with the collection module 131, one of the positive and negative tabs 122 and 123 is provided with the collection plate 130 and electrically connected with the collection module 131, and the other is electrically connected with the third wire 135.

[0057] Among them, the positive tab 122 can be provided with the collection plate 130 and electrically connected with the collection module 131, and the collection plate 130 is electrically connected with the negative tab 123 through the third wire 135. Alternatively, the negative tab 123 can be provided with the collection plate 130 and electrically connected with the collection module 131, and the collection plate 130 is electrically connected with the positive tab 122 through the third wire 135. In actual application, the above two setting forms can be selected as required.

[0058] Specifically, when the collection plate 130 is arranged on one of the positive and negative tabs 122 and 123, it can be hot-melt connected with the corresponding tab, and the collection module 131 is electrically connected with the corresponding tab, and the collection module 131 is electrically connected with the other of the positive and negative tabs 122 and 123 through the third wire 135, so as to correspond to the collection of the positive and negative electrode current and / or voltage information, and further realize the accurate monitoring of the current and / or voltage state of the battery cell 120. If the voltage of the battery cell 120 is too high or too low, the battery management system can adopt, for example, cutting off the charging or discharging circuit to prevent the battery cell 120 from overcharging or overdischarging, thereby avoiding safety accidents such as thermal runaway, burning, explosion and the like of the battery.

[0059] Referring to Figure 4 , Figure 4 is a structural schematic diagram of a soft package battery in another embodiment of the present application:

[0060] In some embodiments, as shown in Figure 4 , the collection module 131 includes a first collection unit 1311, a second collection unit 1312 and a fourth wire 1313, the first collection unit 1311 is arranged on the positive tab 122 and electrically connected with the positive tab 122, the second collection unit 1312 is arranged on the negative tab 123 and electrically connected with the negative tab 123, and the fourth wire 1313 is electrically connected with the first and second collection units 1311 and 1312.

[0061] In this embodiment, the acquisition module 131 includes two acquisition units: a first acquisition unit 1311 and a second acquisition unit 1312. The first acquisition unit 1311 and the second acquisition unit 1312 are connected by a fourth wire 1313 to enable data transmission. The first acquisition unit 1311 is located at the positive electrode tab 122 and can acquire the current and / or voltage information of the positive terminal. The second acquisition unit 1312 is located at the negative electrode tab 123 and can acquire the current and / or voltage information of the negative terminal, thereby achieving accurate monitoring of the current and / or voltage status of the battery cell 120. If the voltage of the battery cell 120 is too high or too low, the battery management system can take measures such as cutting off the charging or discharging circuit to prevent the battery cell 120 from being overcharged or over-discharged, thereby avoiding safety accidents such as thermal runaway, combustion, and explosion of the battery.

[0062] In some embodiments, such as Figure 3 As shown, both the positive tab 122 and the negative tab 123 are provided with an insulating layer 140, which covers the acquisition module 131. In this embodiment, the insulating layer 140 provides insulation between the positive tab 122 and the negative tab 123 and between them and other surrounding conductive objects, preventing short circuits caused by direct contact. When the battery is subjected to pressure, impact, or during complex assembly processes, the insulating layer 140 acts as a protective barrier, preventing direct current flow between the positive and negative tabs 123, thereby reducing the risk of serious safety accidents such as battery fires and explosions. Furthermore, the acquisition module 131 is used to acquire key parameters such as battery voltage and current. The insulating layer 140 protects the acquisition module 131, enabling it to acquire signals from inside the battery more accurately and stably, ensuring that the battery management system receives stable and reliable signals for precise charge and discharge control. The insulating layer 140 can be made of insulating materials such as PI (polyimide) or PET (polyester), but is not limited to these.

[0063] In some embodiments, such as Figure 1 As shown, both the positive electrode tab 122 and the negative electrode tab 123 extend outwards from the housing 110 in the third direction Z, and at least a portion of the insulating layer 140 is located outside the housing 110. Additionally, the acquisition module 131 may also include a temperature acquisition unit.

[0064] Wherein, in the third direction Z of the soft package battery, the positive and negative tabs 122 and 123 extend out of the shell 110, providing a convenient interface for the connection of external circuits, and the operator can directly connect the battery and the external circuit outside the shell 110 without stretching into the complex space inside the battery, simplifying the process of circuit connection. Moreover, at least a part of the insulating layer 140 is located outside the shell 110, which can prevent the positive and negative tabs 123 from contacting each other or an external conductive object from accidentally contacting the positive and negative tabs 123, thereby improving the safety of the battery.

[0065] The soft package battery generates heat during the charging and discharging process, especially during high-rate charging and discharging. The acquisition module 131 also includes a temperature acquisition unit to acquire temperature information of the battery cell 120, thereby monitoring the temperature of the battery cell 120 in real time. When the temperature rises to a critical value that may cause thermal runaway, the battery management system can take timely measures such as reducing the charging current or starting the cooling system according to the signal feedback by the temperature acquisition unit. For example, during the rapid charging process of an electric vehicle, the battery temperature will rise rapidly, and the temperature acquisition unit of the acquisition module 131 can quickly perceive the temperature change, allowing the battery management system to control the charging power to avoid thermal runaway caused by overheating of the battery, thereby ensuring the safety of the vehicle and passengers.

[0066] The utility model embodiment further provides a battery pack, the battery pack includes a plurality of as aforementioned embodiment records soft package battery, the specific structure of the soft package battery refers to the above embodiment, because the battery pack adopts all the technical solutions of all the above embodiments, therefore at least has all the technical effects brought by the technical solutions of the above embodiments, here will not repeat.

[0067] The above is only part or preferred embodiment of the utility model, neither the text nor the drawings can limit the scope of protection of the utility model, any equivalent structural transformation made by using the utility model specification and drawings, or direct / indirect application in other related technical fields is included in the scope of protection of the utility model.

Claims

1. A pouch battery having a first direction and a third direction intersecting each other, characterized in that, include: A housing, the housing comprising a body portion and an encapsulation portion, the encapsulation portion being connected to the body portion in the third direction; A battery cell, comprising an electrode assembly, a positive tab, and a negative tab, wherein the electrode assembly is disposed within the body portion, the positive tab and the negative tab are both connected to the electrode assembly, and the positive tab and the negative tab are located on the same side of the electrode assembly in the third direction, and the positive tab and the negative tab are both inserted through the encapsulation portion in the third direction and extend to the outside of the encapsulation portion; A data acquisition board is disposed in the packaging section. The data acquisition board has a data acquisition module and a wireless transmission module. The data acquisition module is electrically connected to both the positive and negative tabs, and the wireless transmission module is electrically connected to the data acquisition module.

2. The soft-pack battery according to claim 1, characterized in that, The positive electrode and the negative electrode are spaced apart in the first direction, and the acquisition board is located between the positive electrode and the negative electrode in the first direction.

3. The soft-pack battery according to claim 2, characterized in that, The acquisition board is disposed on the outer surface of the encapsulation part; The acquisition board also has a first wire and a second wire, the first wire being electrically connected to the positive electrode and the acquisition module, and the second wire being electrically connected to the negative electrode and the acquisition module.

4. The soft-pack battery according to claim 3, characterized in that, The acquisition board is bonded to the outer surface of the encapsulation part; A portion of the first wire is adhered to the outer surface of the package portion, and the first wire is electrically connected to the positive electrode tab extending outside the housing; A portion of the second wire is adhered to the outer surface of the package, and the second wire is electrically connected to the negative electrode tab extending outside the housing.

5. The soft-pack battery according to claim 1, characterized in that, The acquisition board is disposed inside the encapsulation part; The acquisition board also has a first wire and a second wire, the first wire being electrically connected to the positive electrode and the acquisition module, and the second wire being electrically connected to the negative electrode and the acquisition module.

6. The soft-pack battery according to claim 1, characterized in that, The acquisition board also has a third wire electrically connected to the acquisition module. One of the positive electrode and the negative electrode is provided with the acquisition board and electrically connected to the acquisition module, and the other is electrically connected to the third wire.

7. The soft-pack battery according to claim 1, characterized in that, The acquisition module includes a first acquisition unit, a second acquisition unit, and a fourth wire. The first acquisition unit is located on the positive electrode and electrically connected to the positive electrode. The second acquisition unit is located on the negative electrode and electrically connected to the negative electrode. The fourth wire is electrically connected to the first acquisition unit and the second acquisition unit.

8. The pouch battery according to claim 6 or 7, characterized in that, Both the positive and negative electrodes are provided with an insulating layer, which covers the acquisition module.

9. The soft-pack battery according to claim 8, characterized in that, At least a portion of the insulating layer is located outside the housing; and / or, the acquisition module further includes a temperature acquisition unit.

10. A battery pack, characterized in that, Includes the pouch cell as described in any one of claims 1-9.

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